@import url("https://cdn.jsdelivr.net/npm/highlight.js@11.11.1/styles/github-dark.min.css");

/* ========================================================================
   StudyMate AI — Style System
   Themes: dark (default) | light | blue | purple
   ================= Reset & Core ================= */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-main: #0f172a;
  --bg-deep: #020617;
  --bg-elevated: #111c34;
  --surface: rgba(15, 23, 42, 0.74);
  --surface-soft: rgba(255, 255, 255, 0.05);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(56, 189, 248, 0.28);
  --text-main: #e2e8f0;
  --text-soft: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --danger: #f87171;
  --success: #34d399;
  --input-bg: rgba(255, 255, 255, 0.05);
  --card-shadow: 0 18px 55px rgba(2, 6, 23, 0.32);
  --gradient-top-left: rgba(56, 189, 248, 0.18);
  --gradient-bottom-right: rgba(14, 165, 233, 0.1);
  --shadow-lg: 0 28px 80px rgba(2, 6, 23, 0.45);
  --shadow-md: 0 18px 55px rgba(2, 6, 23, 0.32);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --transition: 180ms ease;
}

/* ---- Light theme ---- */
body.light {
  --bg-main: #f8fafc;
  --bg-deep: #e2e8f0;
  --bg-elevated: #ffffff;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-soft: rgba(15, 23, 42, 0.04);
  --surface-strong: rgba(15, 23, 42, 0.08);
  --border: rgba(15, 23, 42, 0.12);
  --border-strong: rgba(14, 165, 233, 0.28);
  --text-main: #0f172a;
  --text-soft: #475569;
  --input-bg: rgba(255, 255, 255, 0.86);
  --card-shadow: 0 18px 55px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 28px 80px rgba(15, 23, 42, 0.16);
  --shadow-md: 0 18px 55px rgba(15, 23, 42, 0.12);
  --gradient-top-left: rgba(56, 189, 248, 0.12);
  --gradient-bottom-right: rgba(14, 165, 233, 0.08);
}

/* ---- Blue theme ---- */
body.blue {
  --bg-main: #0c1929;
  --bg-deep: #04101e;
  --bg-elevated: #102040;
  --surface: rgba(16, 32, 64, 0.78);
  --surface-soft: rgba(96, 165, 250, 0.06);
  --surface-strong: rgba(96, 165, 250, 0.12);
  --border: rgba(96, 165, 250, 0.14);
  --border-strong: rgba(96, 165, 250, 0.32);
  --text-main: #dbeafe;
  --text-soft: #93c5fd;
  --accent: #60a5fa;
  --accent-strong: #3b82f6;
  --input-bg: rgba(96, 165, 250, 0.06);
  --gradient-top-left: rgba(96, 165, 250, 0.2);
  --gradient-bottom-right: rgba(59, 130, 246, 0.12);
}

/* ---- Purple theme ---- */
body.purple {
  --bg-main: #1a0a2e;
  --bg-deep: #0f0520;
  --bg-elevated: #221342;
  --surface: rgba(34, 19, 66, 0.78);
  --surface-soft: rgba(192, 132, 252, 0.06);
  --surface-strong: rgba(192, 132, 252, 0.12);
  --border: rgba(192, 132, 252, 0.14);
  --border-strong: rgba(192, 132, 252, 0.32);
  --text-main: #f3e8ff;
  --text-soft: #d8b4fe;
  --accent: #c084fc;
  --accent-strong: #a855f7;
  --input-bg: rgba(192, 132, 252, 0.06);
  --gradient-top-left: rgba(192, 132, 252, 0.2);
  --gradient-bottom-right: rgba(168, 85, 247, 0.12);
}

/* ========================================================================
   Reset
   ======================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  transition:
    background-color var(--transition),
    color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

html,
body {
  margin: 0;
  height: 100%;
  width: 100%;
}

body {
  font-family: "Outfit", sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at top left, var(--gradient-top-left), transparent 28%),
    radial-gradient(circle at bottom right, var(--gradient-bottom-right), transparent 24%),
    linear-gradient(140deg, var(--bg-main) 0%, #081120 52%, var(--bg-deep) 100%);
}

body.light {
  background:
    radial-gradient(circle at top left, var(--gradient-top-left), transparent 28%),
    radial-gradient(circle at bottom right, var(--gradient-bottom-right), transparent 24%),
    linear-gradient(140deg, var(--bg-main) 0%, #eef4fb 50%, var(--bg-deep) 100%);
}

body.blue {
  background:
    radial-gradient(circle at top left, var(--gradient-top-left), transparent 28%),
    radial-gradient(circle at bottom right, var(--gradient-bottom-right), transparent 24%),
    linear-gradient(140deg, var(--bg-main) 0%, #071428 52%, var(--bg-deep) 100%);
}

body.purple {
  background:
    radial-gradient(circle at top left, var(--gradient-top-left), transparent 28%),
    radial-gradient(circle at bottom right, var(--gradient-bottom-right), transparent 24%),
    linear-gradient(140deg, var(--bg-main) 0%, #140830 52%, var(--bg-deep) 100%);
}

body[data-page="dashboard"] {
  height: 100dvh;
  overflow: hidden;
}

body[data-page="settings"] {
  min-height: 100dvh;
  overflow-x: hidden;
}

button,
input,
textarea,
select {
  font: inherit;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ========================================================================
   Shared components
   ======================================================================== */

.glass-card {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.primary-btn,
.ghost-btn,
.icon-btn,
.history-open,
.history-action,
.rename-btn {
  transition:
    transform var(--transition),
    background var(--transition),
    border-color var(--transition),
    opacity var(--transition);
}

.primary-btn,
.ghost-btn {
  border: none;
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
}

.primary-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #04111f;
  font-weight: 700;
}

.ghost-btn {
  background: var(--surface-soft);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.primary-btn:hover,
.ghost-btn:hover,
.icon-btn:hover,
.history-open:hover,
.history-action:hover,
.rename-btn:hover {
  transform: translateY(-1px);
}

.primary-btn:disabled,
.ghost-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.full-width {
  width: 100%;
}

/* ========================================================================
   Auth pages
   ======================================================================== */

.auth-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 16px;
  padding-bottom: calc(24px + env(safe-area-inset-bottom));
  box-sizing: border-box;

  .chat-input-container {
    padding: 0 10px 10px;
    padding-bottom: calc(10px + env(safe-area-inset-bottom));
  }
}

.auth-shell {
  width: min(1120px, 100%);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  align-items: center;
}

.auth-copy {
  padding: 24px;
}

.auth-badge {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.14);
  color: #bae6fd;
  font-weight: 600;
}

.auth-copy h1 {
  margin: 18px 0 12px;
  font-size: clamp(2.3rem, 5vw, 4.4rem);
  line-height: 1.02;
}

.auth-copy p {
  margin: 0;
  max-width: 560px;
  color: var(--text-soft);
  font-size: 1.02rem;
  line-height: 1.8;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  padding: 32px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.auth-header h2 {
  margin: 0;
  font-size: 1.8rem;
}

.auth-header p {
  margin: 10px 0 0;
  color: var(--text-soft);
}

.auth-form {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.auth-form label,
.control-group {
  display: grid;
  gap: 8px;
}

.auth-form span,
.control-group span,
.toggle-group span,
.sidebar-label,
.panel-overline {
  color: var(--text-soft);
  font-size: 0.88rem;
}

.auth-form input,
.control-group select,
.composer textarea,
.rename-input {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.09);
  outline: none;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-radius: 16px;
  padding: 14px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.auth-form input:focus,
.control-group select:focus,
.composer textarea:focus,
.rename-input:focus {
  border-color: rgba(56, 189, 248, 0.6);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.12);
}

.form-message {
  min-height: 24px;
  margin: 16px 0 0;
  font-size: 0.94rem;
}

.form-message.error {
  color: var(--danger);
}

.form-message.success {
  color: var(--success);
}

.forgot-password-link {
  display: inline-block;
  margin: -4px 0 4px;
  color: var(--text-soft);
  font-size: 0.85rem;
  text-decoration: none;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.forgot-password-link:hover {
  opacity: 1;
  color: #60a5fa;
  text-decoration: underline;
}

.auth-switch {
  margin: 18px 0 0;
  color: var(--text-soft);
}

.auth-divider {
  position: relative;
  margin: 22px 0 18px;
  text-align: center;
}

.auth-divider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.auth-divider span {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 0 14px;
  background: var(--bg-elevated);
  color: var(--text-soft);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.google-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 16px;
  border: none;
  border-radius: 14px;
  background: #ffffff;
  color: #111827;
  cursor: pointer;
  font-weight: 600;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    opacity var(--transition);
}

.google-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(255, 255, 255, 0.12);
}

.google-icon {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
}

/* ========================================================================
   Dashboard layout
   ======================================================================== */

.app-container {
  display: flex;
  height: 100dvh;
  overflow: hidden;
}

.app-shell {
  position: relative;
  height: 100%;
  display: flex;
  flex: 1 1 auto;
  gap: 18px;
  padding: 18px;
  min-height: 0;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
  min-height: 0;
}

.sidebar,
.topbar,
.chat-messages,
.composer {
  border-radius: var(--radius-xl);
}

.sidebar {
  width: 260px;
  min-width: 260px;
  height: 100%;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow: hidden;
}

.sidebar-content {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow-y: auto;
}

.sidebar-top {
  display: grid;
  gap: 18px;
}

.brand-block {
  display: flex;
  gap: 14px;
  align-items: center;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-overline {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.84rem;
}

.brand-title {
  margin: 6px 0 0;
  font-size: 1.08rem;
  line-height: 1.3;
}

.sidebar-version {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--surface-soft);
  border-radius: 12px;
  font-size: 0.8rem;
  font-family: monospace;
  color: var(--text-soft);
}

.version-status {
  padding: 2px 6px;
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-radius: 4px;
  font-size: 0.7rem;
  font-family: "Outfit", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.history-panel {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: visible;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: visible;
  padding-right: 0;
}

.sidebar-footer {
  margin-top: auto;
  padding: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-shrink: 0;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-soft);
}

.changelog-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--text-main);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
}

.changelog-btn:hover {
  background: var(--surface-strong);
  transform: translateY(-1px);
}

.history-empty {
  padding: 16px;
  border-radius: 18px;
  background: var(--surface-soft);
  color: var(--text-soft);
  line-height: 1.6;
}

.history-card {
  padding: 12px;
  border-radius: 18px;
  border: 1px solid transparent;
  background: var(--surface-soft);
}

.history-card:hover {
  background: rgba(255, 255, 255, 0.08);
}

.history-card.active {
  background: rgba(59, 130, 246, 0.2);
  border-color: transparent;
}

.history-open {
  width: 100%;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
}

.history-title {
  display: block;
  font-weight: 600;
  line-height: 1.45;
}

.history-meta {
  display: block;
  margin-top: 6px;
  color: var(--text-soft);
  font-size: 0.84rem;
}

.history-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.history-action,
.rename-btn {
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
}

.history-action.danger {
  color: #fca5a5;
}

.rename-form {
  display: grid;
  gap: 10px;
}

.rename-actions {
  display: flex;
  gap: 8px;
}

/* ========================================================================
   Main panel
   ======================================================================== */

.main-panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  gap: 0;
  position: relative;
  overflow: hidden;
}

.topbar {
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  overflow: visible;
  pointer-events: none;
  background: linear-gradient(to bottom, var(--bg-main) 20%, transparent 100%);
  padding-bottom: 30px;
}

.topbar>* {
  pointer-events: auto;
}

/* Row 1 — Hamburger | Profile */
.topbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
}

/* Row 2 — Mode, Notes, Hinglish controls */
.header-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-width: 0;
  flex-wrap: wrap;
  padding-top: 4px;
  border-top: 1px solid var(--border);
}

.mode-group {
  flex: 0 0 auto;
  min-width: 0;
}

.mode-group .control-group {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.mode-group .control-group span {
  white-space: nowrap;
}

.custom-dropdown {
  position: relative;
  width: 120px;
}

.dropdown-selected {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--text-main);
  cursor: pointer;
  font-size: 0.9rem;
}

.dropdown-selected::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--text-soft);
  border-bottom: 2px solid var(--text-soft);
  transform: rotate(45deg) translateY(-1px);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.custom-dropdown.open .dropdown-selected::after {
  transform: rotate(-135deg) translateY(-1px);
}

.dropdown-options {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 100%;
  display: none;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-main);
  box-shadow: var(--shadow-md);
  z-index: 9999;
}

.custom-dropdown.open .dropdown-options {
  display: grid;
  gap: 4px;
}

.dropdown-options .option {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
}

.dropdown-options .option:hover,
.dropdown-options .option.active {
  background: var(--surface-strong);
}

/* Notes dropdown needs a wider box for longer labels */
#notesDropdown {
  width: 146px;
}

/* ========================================================================
   Controls (toggle, profile)
   ======================================================================== */

.toggle-group {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.hinglish-control {
  white-space: nowrap;
}

.hinglish-toggle,
.profile,
.profile-wrap {
  flex-shrink: 0;
}

.profile-wrap {
  position: relative;
  z-index: 1001;
}

.profile {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-soft);
  transition: 0.2s ease;
}

.profile:hover {
  background: var(--surface-strong);
}

.profile img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid rgba(255, 255, 255, 0.2);
  transition: transform var(--transition);
  object-fit: cover;
}

.profile img:hover {
  transform: scale(1.05);
}

.profile-name {
  color: var(--text-main);
  font-weight: 600;
  font-size: 14px;
  max-width: 120px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dropdown {
  position: absolute;
  top: 60px;
  right: 20px;
  width: 240px;
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(12px);
  padding: 15px;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.98);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  z-index: 9999;
}

.dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.profile-info {
  display: flex;
  gap: 10px;
  align-items: center;
}

.profile-info img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.dropdown-name,
.dropdown-email {
  margin: 0;
}

.dropdown-name {
  font-weight: 600;
}

.dropdown-email {
  margin-top: 6px;
  margin-bottom: 14px;
  color: var(--text-soft);
  font-size: 12px;
  opacity: 0.7;
  word-break: break-word;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 10px 0;
}

.dropdown .ghost-btn+.ghost-btn {
  margin-top: 10px;
}

.control-group select {
  min-width: 150px;
}

.toggle-switch {
  position: relative;
  width: 62px;
  height: 34px;
}

.toggle-switch input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  transition: background var(--transition);
}

.toggle-slider::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #ffffff;
  transition: transform var(--transition);
}

.toggle-switch input:checked+.toggle-slider {
  background: rgba(56, 189, 248, 0.3);
}

.toggle-switch input:checked+.toggle-slider::after {
  transform: translateX(28px);
}

/* ========================================================================
   Study Tracker Bar
   ======================================================================== */

.study-tracker-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.tracker-stat {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  color: var(--text-soft);
}

.tracker-stat strong {
  color: var(--text-main);
  font-weight: 700;
}

.tracker-icon {
  font-size: 1.1rem;
}

/* ========================================================================
   Chat messages
   ======================================================================== */

.chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 100px 20px 20px 20px;
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
  scroll-behavior: smooth;
}

.empty-state {
  margin: auto;
  max-width: 520px;
  padding: 30px;
  text-align: center;
  border-radius: var(--radius-lg);
  background: var(--surface-soft);
  border: 1px solid var(--border);
}

.empty-state h3 {
  margin: 0 0 10px;
  font-size: 1.6rem;
}

.empty-state p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.7;
}

.message-row {
  display: flex;
  width: 100%;
  margin: 12px 0;
  transition: opacity 0.2s ease;
}

.message-row.user {
  justify-content: flex-end;
}

.message-row.ai {
  justify-content: flex-start;
}

/* ---------- User bubble: right-aligned, dynamic sizing ---------- */
.message-bubble {
  max-width: 82%;
  width: auto;
  min-width: 44px;
  flex-shrink: 0;

  padding: 12px 14px;
  border-radius: 16px;
  line-height: 1.6;
  transition: transform 0.2s ease, background 0.2s ease;
  position: relative;

  /* ROBUST TEXT WRAPPING */
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.message-bubble:hover {
  transform: translateY(-1px);
}

.message-row.user .message-bubble {
  background: linear-gradient(135deg, #4f8cff, #2563eb);
  color: white;
  border-radius: 18px 18px 4px 18px;
}

.message-row.ai .message-bubble {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border-radius: 18px 18px 18px 4px;
}

.message-row.ai .message-bubble:hover {
  background: rgba(255, 255, 255, 0.06);
}

.message-meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 6px;
  color: var(--text-soft);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.message-row.user .message-meta {
  color: rgba(224, 231, 255, 0.7);
}

.message-content {
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.6;
  font-size: 15px;
}

.message-content p {
  margin: 0 0 0.75rem;
}

.message-content p:last-child {
  margin-bottom: 0;
}

/* Quiz UI Enhancement */
.quiz-box {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border-left: 3px solid #10b981;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
  animation: fadeIn 0.3s ease;
}

.quiz-arrow {
  color: #10b981;
  font-weight: bold;
  font-size: 1.1rem;
  margin-top: 1px;
}

.quiz-text {
  color: var(--text-main);
  font-weight: 500;
  font-size: 14px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message-content ul,
.message-content ol {
  margin: 0.6rem 0;
  padding-left: 1.25rem;
}

.message-content li {
  margin: 0.2rem 0;
}

.message-content code {
  background: rgba(148, 163, 184, 0.2);
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 8px;
  padding: 1px 6px;
  font-family: "Fira Code", "Courier New", monospace;
  font-size: 0.92em;
}

.message-content pre {
  margin: 0.7rem 0;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(2, 6, 23, 0.45);
  overflow-x: auto;
}

.message-content pre code {
  border: 0;
  background: transparent;
  padding: 0;
  display: block;
}

.code-block {
  background: #0f172a;
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 10px;
  margin-top: 10px;
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #1e293b;
  padding: 6px 10px;
  font-size: 12px;
  color: #cbd5f5;
  text-transform: lowercase;
}

.copy-btn {
  background: none;
  border: none;
  color: #38bdf8;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}

.copy-btn:hover {
  color: #7dd3fc;
}

.code-block pre {
  margin: 0;
  padding: 12px;
  overflow-x: auto;
  background: transparent;
}

.code-block pre code.hljs {
  padding: 0;
  background: transparent;
}

.sources {
  margin-top: 10px;
  font-size: 12px;
  opacity: 0.8;
}

.sources p {
  margin: 0 0 6px;
  color: var(--text-soft);
}

.sources a {
  display: block;
  color: #3b82f6;
  text-decoration: none;
  margin: 2px 0;
}

.sources a:hover {
  text-decoration: underline;
}

.message-actions {
  display: flex;
  gap: 8px;
  opacity: 0;
  transition: opacity var(--transition);
}

.message-row:hover .message-actions,
.message-actions:focus-within {
  opacity: 1;
}

.message-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--text-soft);
  cursor: pointer;
  font-size: 0.82rem;
}

.message-action-btn:hover {
  color: var(--text-main);
  background: var(--surface-strong);
}

.message-action-btn svg {
  width: 16px;
  height: 16px;
}

.message-editor {
  display: grid;
  gap: 12px;
}

.message-edit-input {
  width: min(100%, 560px);
  min-height: 76px;
  resize: none;
  border: 1px solid var(--border);
  outline: none;
  border-radius: 16px;
  padding: 12px 14px;
  background: var(--input-bg);
  color: var(--text-main);
  line-height: 1.7;
}

.message-edit-input:focus {
  border-color: rgba(56, 189, 248, 0.6);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.12);
}

.message-edit-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========================================================================
   Composer
   ======================================================================== */

.composer {
  padding: 12px 14px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  flex-shrink: 0;
  align-items: end;
  background: var(--bg-main);
  z-index: 100;
}

.composer textarea {
  resize: none;
  min-height: 48px;
  max-height: 180px;
  border-radius: 20px;
  padding: 12px 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.1);
}

.composer textarea:focus {
  outline: none;
  border: 1px solid #3b82f6;
}

.send-btn {
  align-self: end;
  width: 46px;
  height: 46px;
  padding: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: transform var(--transition), opacity var(--transition);
}

.send-btn:hover:not(:disabled) {
  transform: scale(1.05);
}

.send-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.send-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

/* Let the bottom auto-scroll element stay out of sight */
.bottom-anchor {
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========================================================================
   Typing indicator
   ======================================================================== */

.typing-dots {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.typing-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(226, 232, 240, 0.82);
  animation: typing-bounce 1s infinite ease-in-out;
}

.typing-dots span:nth-child(2) {
  animation-delay: 0.12s;
}

.typing-dots span:nth-child(3) {
  animation-delay: 0.24s;
}

/* ========================================================================
   Hamburger / sidebar overlay
   ======================================================================== */

.icon-btn {
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-soft);
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
}

.icon-btn span {
  width: 18px;
  height: 2px;
  margin: 0 auto;
  border-radius: 999px;
  background: var(--text-main);
}

.sidebar-overlay {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  background: rgba(2, 6, 23, 0.58);
  transition: opacity var(--transition), visibility var(--transition);
  z-index: 15;
}

.mobile-only {
  display: none;
}

/* ========================================================================
   Modals
   ======================================================================== */

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: none;
  justify-content: center;
  align-items: center;
  padding: 18px;
  z-index: 10000;
  opacity: 0;
  transition: opacity var(--transition);
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal.show {
  display: flex;
  opacity: 1;
}

.modal-content {
  width: min(420px, 100%);
  padding: 22px;
  border-radius: 16px;
  animation: fade-up 180ms ease;
}

.modal-overlay .modal-content {
  max-width: 400px;
  width: 90%;
}

.modal-content h3 {
  margin: 0 0 16px;
}

.modal-content input {
  width: 100%;
  border: 1px solid var(--border);
  outline: none;
  background: var(--input-bg);
  color: var(--text-main);
  border-radius: 14px;
  padding: 14px 16px;
}

.modal-content input:focus {
  border-color: rgba(56, 189, 248, 0.6);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.12);
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  justify-content: flex-end;
}

.guest-limit-actions {
  justify-content: space-between;
  flex-wrap: wrap;
}

.danger-btn {
  color: #fecaca;
  border-color: rgba(248, 113, 113, 0.25);
}

.primary-btn.danger-btn {
  color: #fff7f7;
  border-color: transparent;
  background: linear-gradient(135deg, #ef4444, #dc2626);
}

/* ========================================================================
   Toast notifications
   ======================================================================== */

#toastContainer {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 11000;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  pointer-events: none;
}

.toast {
  min-width: 220px;
  max-width: min(360px, calc(100vw - 32px));
  margin-top: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(15, 23, 42, 0.9);
  color: #ffffff;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
  animation: slide-in 0.3s ease;
  pointer-events: auto;
}

.toast.info {
  background: rgba(15, 23, 42, 0.92);
}

.toast.success {
  background: rgba(16, 185, 129, 0.92);
}

.toast.error {
  background: rgba(220, 38, 38, 0.92);
}

.toast.leaving {
  animation: slide-out 0.22s ease forwards;
}

.confirm-content {
  width: min(440px, 100%);
}

.confirm-message {
  margin: 8px 0 0;
  color: var(--text-soft);
  line-height: 1.65;
}

/* ========================================================================
   Settings page
   ======================================================================== */

.settings-shell {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.settings-card {
  width: min(900px, 100%);
  padding: 32px;
  border-radius: var(--radius-xl);
  display: grid;
  gap: 24px;
  box-shadow: var(--shadow-lg);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.settings-header h1 {
  margin: 8px 0 0;
  font-size: clamp(2rem, 4vw, 2.8rem);
}

.settings-intro {
  margin: 10px 0 0;
  color: var(--text-soft);
  line-height: 1.7;
}

.settings-back {
  white-space: nowrap;
}

.settings-section {
  padding: 22px;
  border-radius: 24px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
}

.followup-box {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}

.quiz-trigger-btn {
  background: var(--accent);
  color: #020617;
  border: none;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition), opacity var(--transition);
}

.quiz-trigger-btn:hover {
  transform: translateY(-1px);
  opacity: 0.9;
}

.settings-section h2 {
  margin: 0 0 18px;
  font-size: 1.1rem;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0;
}

.settings-row+.settings-row {
  border-top: 1px solid var(--border);
}

.settings-row h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.settings-row p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.6;
}

.settings-select {
  min-width: 220px;
}

.settings-account {
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.settings-account p {
  margin: 0;
}

.settings-account p+p {
  margin-top: 6px;
  color: var(--text-soft);
}

.settings-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

/* ========================================================================
   Theme selector (settings page)
   ======================================================================== */

.theme-selector {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.theme-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: 16px;
  background: var(--surface-soft);
  color: var(--text-main);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  transition: border-color var(--transition), transform var(--transition);
}

.theme-btn:hover {
  transform: translateY(-1px);
}

.theme-btn.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.theme-preview {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.dark-preview {
  background: linear-gradient(135deg, #0f172a, #1e293b);
}

.light-preview {
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
}

.blue-preview {
  background: linear-gradient(135deg, #0c1929, #1e3a5f);
}

.purple-preview {
  background: linear-gradient(135deg, #1a0a2e, #3b1f6e);
}

/* ========================================================================
   Animations
   ======================================================================== */

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slide-in {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slide-out {
  from {
    transform: translateX(0);
    opacity: 1;
  }

  to {
    transform: translateX(20%);
    opacity: 0;
  }
}

@keyframes typing-bounce {

  0%,
  80%,
  100% {
    transform: translateY(0);
    opacity: 0.6;
  }

  40% {
    transform: translateY(-5px);
    opacity: 1;
  }
}

/* ========================================================================
   Responsive — tablet
   ======================================================================== */

@media (max-width: 980px) {
  .auth-shell {
    grid-template-columns: 1fr;
  }

  .auth-card {
    justify-self: stretch;
    width: 100%;
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: absolute;
    top: 0;
    left: -100%;
    /* Default hidden on mobile */
    z-index: 1001;
    /* Must be above overlay */
    width: 280px;
    height: 100%;
    border-radius: 0 24px 24px 0;
    transition: left 0.3s ease;
    pointer-events: auto;
    overflow: hidden;
  }

  .sidebar.open {
    left: 0;
  }

  .mobile-only {
    display: inline-flex;
  }

  .sidebar-overlay {
    z-index: 1000;
    pointer-events: none;
    /* do NOT block anything by default */
    opacity: 0;
    transition: opacity 0.3s;
  }

  .sidebar-overlay.active {
    pointer-events: auto;
    /* only active when sidebar is open */
    opacity: 1;
    visibility: visible;
    /* keep visibility for accessibility */
  }
}

/* === Desktop Clean Layout === */
@media (min-width: 981px) {
  .sidebar {
    position: relative;
    left: 0;
    z-index: 1;
    width: 260px;
    height: 100%;
    border-radius: 0;
    pointer-events: auto;
    overflow: hidden;
  }

  .sidebar-overlay {
    display: none;
  }
}

/* ========================================================================
   Responsive — mobile
   ======================================================================== */

@media (max-width: 768px) {
  .auth-page {
    padding: 14px;
  }

  .auth-copy,
  .auth-card {
    padding: 22px;
  }

  .auth-copy h1 {
    font-size: clamp(2rem, 11vw, 3rem);
  }

  .app-shell {
    padding: 6px;
    gap: 6px;
  }

  .main-panel {
    gap: 6px;
  }

  .topbar,
  .chat-messages,
  .composer {
    border-radius: 20px;
  }

  .topbar {
    padding: 12px;
    gap: 10px;
  }

  /* Hamburger left, title center, profile right — clean row */
  .topbar-row {
    gap: 10px;
  }

  .chat-title {
    font-size: 1.15rem;
  }

  .header-controls {
    gap: 8px;
    padding-top: 8px;
  }

  .profile-name {
    display: none;
  }

  .profile {
    padding: 4px 6px;
  }

  .profile img {
    width: 32px;
    height: 32px;
  }

  .custom-dropdown {
    width: 90px;
  }

  #notesDropdown {
    width: 105px;
  }

  .dropdown-selected {
    font-size: 13px;
    padding: 7px 9px;
  }

  .toggle-switch {
    width: 50px;
    height: 28px;
  }

  .toggle-slider::after {
    width: 22px;
    height: 22px;
    top: 2px;
    left: 2px;
  }

  .toggle-switch input:checked+.toggle-slider::after {
    transform: translateX(22px);
  }

  .composer {
    padding: 10px;
    gap: 8px;
  }

  .composer textarea {
    min-height: 42px;
    padding: 10px 12px;
    font-size: 0.92rem;
  }

  .composer .primary-btn {
    width: 40px;
    height: 40px;
    padding: 0;
  }

  /* Message bubbles scale up on mobile for readability */
  .message-bubble {
    max-width: 100% !important;
    padding: 12px 14px;
    margin: 0 !important;
  }

  .message-row.user .message-bubble {
    border-radius: 16px 16px 4px 16px;
  }

  .message-row.ai .message-bubble {
    border-radius: 16px 16px 16px 4px;
  }

  .message-actions {
    opacity: 1;
    transform: none;
    flex-wrap: wrap;
  }

  .study-tracker-bar {
    gap: 14px;
    padding: 8px 12px;
    font-size: 0.85rem;
    border-radius: 14px;
  }

  #toastContainer {
    top: 12px;
    right: 12px;
    left: 12px;
    align-items: stretch;
  }

  .toast {
    max-width: 100%;
  }

  .settings-shell {
    padding: 14px;
  }

  .settings-card {
    padding: 22px;
  }

  .settings-header,
  .settings-row {
    flex-direction: column;
    align-items: stretch;
  }

  .settings-back,
  .settings-select {
    width: 100%;
  }

  .settings-actions .ghost-btn {
    width: 100%;
  }

  .theme-selector {
    justify-content: center;
  }

  .icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }

  .icon-btn span {
    width: 16px;
  }
}

/* ========================================================================
   Logo
   ======================================================================== */

.logo img {
  width: 100px;
  height: 100px;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.6));
  transition: 0.2s ease;
  animation: float 3s ease-in-out infinite;
}

.logo img:hover {
  transform: scale(1.1);
}

@keyframes float {
  0% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-3px);
  }

  100% {
    transform: translateY(0);
  }
}

/* ========================================================================
   Loading States & Utilities
   ======================================================================== */

.send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: scale(0.95);
  transition: all 0.2s ease;
}

.loading-text i {
  opacity: 0.6;
  font-style: italic;
  font-size: 0.95em;
  color: var(--text-soft);
  animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {
  0% {
    opacity: 0.4;
  }

  50% {
    opacity: 0.8;
  }

  100% {
    opacity: 0.4;
  }
}

/* ========================================================================
   Global UI Polish
   ======================================================================== */

button,
input,
textarea,
select,
.message-bubble,
.history-card,
.profile {
  transition: all 0.2s ease;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
}

/* === User Uploaded Overrides === */

/* Sidebar Layout & Stats */
.sidebar-stats {
  margin-top: 10px;
  padding: 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
}

/* Replaced by refined sidebar logic in media queries */

.app-container {
  display: flex !important;
  height: 100dvh !important;
  overflow: hidden !important;
}

.app-shell {
  position: relative;
  display: flex !important;
  flex: 1 1 auto;
  height: 100% !important;
  width: 100% !important;
  overflow: hidden !important;
}

.topbar {
  flex-shrink: 0;
  width: 100%;
  z-index: 10;
}

.chat-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.chat-input-container {
  flex-shrink: 0;
  position: relative;
  bottom: auto;
  width: 100%;
  padding: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: transparent !important;
  z-index: auto;
}

.chat-input {
  padding: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@supports (height: 100dvh) {
  .app-container {
    height: 100dvh !important;
  }

  body[data-page="dashboard"] {
    height: 100dvh;
  }
}

/* Centralized padding in primary chat-container definition */

.composer {
  border-radius: 20px !important;
}

/* Sidebar Overlay */
.sidebar-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}

body.sidebar-open {
  overflow: hidden;
  /* Lock background scroll */
}

@media (min-width: 981px) {
  .sidebar-overlay {
    display: none !important;
  }
}

.sidebar-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 10px;
}

/* Redundant Overrides - Deprecated */

/* === Password Reset Overrides === */
.reset-card {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 320px;
  background: #1e293b;
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  z-index: 10000;
  animation: slideInReset 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.reset-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.reset-logo {
  width: 40px;
}

#closeResetCard {
  background: transparent;
  border: none;
  color: #94a3b8;
  font-size: 20px;
  cursor: pointer;
}

#closeResetCard:hover {
  color: white;
}

.reset-card-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.reset-card-body p {
  color: #94a3b8;
  font-size: 14px;
  line-height: 1.4;
}

.alert-warning {
  margin-top: 14px;
  padding: 10px;
  border-radius: 8px;
  background: rgba(255, 0, 0, 0.1);
  color: #f87171;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hidden {
  display: none !important;
  pointer-events: none !important;
}

/* ========================================================================
   Success Screens (Premium UI)
   ======================================================================== */
.success-container {
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(circle at center, #0f172a, #020617);
  animation: fadeIn 0.4s ease forwards;
}

.success-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 40px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  max-width: 400px;
  width: 90%;
}

.success-card h2 {
  margin-bottom: 12px;
  color: #4ade80;
  font-size: 1.8rem;
}

.success-card p {
  color: #94a3b8;
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 8px;
}

.success-card strong {
  color: #3b82f6;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInReset {
  from {
    transform: translateX(110%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.reset-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100dvh;
  padding: 20px;
  padding-bottom: calc(24px + env(safe-area-inset-bottom));
  box-sizing: border-box;
}

.reset-container {
  padding: 40px 30px;
  text-align: center;
  width: 100%;
  max-width: 400px;
}

.reset-container input {
  width: 100%;
  margin: 15px 0;
  padding: 12px 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 16px;
  outline: none;
  transition: border-color 0.2s;
}

.reset-container input:focus {
  border-color: #3b82f6;
}

/* === Updated Animations and UI Polish === */
@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }
}

/* Auth Page Centering Fix */
.auth-page {
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  min-height: 100dvh;
  width: 100%;
}

.reset-container {
  width: 90% !important;
  max-width: 420px !important;
  padding: 40px !important;
  border-radius: 16px !important;
  background: #1e293b !important;
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.6) !important;
  animation: fadeInScale 0.4s ease;
  text-align: center;
}

@media (min-width: 1024px) {
  .reset-container {
    max-width: 500px !important;
    padding: 50px !important;
  }
}

.logo {
  width: 60px !important;
  margin-bottom: 20px !important;
  animation: float 3s ease-in-out infinite !important;
}

@media (min-width: 1024px) {
  .logo {
    width: 80px !important;
  }
}

/* Modal Styling (Overriding existing to ensure visibility) */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: none;
  /* Controlled by .show */
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal.show {
  display: flex !important;
  opacity: 1 !important;
  visibility: visible !important;
}

.modal-box {
  width: 90%;
  max-width: 380px;
  padding: 30px;
  border-radius: 16px;
  background: #1e293b;
  animation: scaleIn 0.3s ease;
  position: relative;
  text-align: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.modal .close-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  color: #94a3b8;
  font-size: 20px;
  cursor: pointer;
  transition: color 0.2s;
}

.modal .close-btn:hover {
  color: white;
}

/* Auth Page Centering Fix for Reset Page */
.reset-page .auth-shell {
  display: flex !important;
  justify-content: center !important;
  grid-template-columns: 1fr !important;
  width: 100% !important;
}

/* Button & Input Feedback */
button {
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease !important;
}

button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

button:active:not(:disabled) {
  transform: scale(0.97);
}

/* === Ultra-Premium Authentication Page Polish === */

body.auth-page {
  min-height: 100dvh !important;
  width: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: space-between !important;
  padding: 16px !important;
  padding-bottom: calc(24px + env(safe-area-inset-bottom)) !important;
  background: radial-gradient(circle at top, #0f172a, #020617) !important;
  font-family: 'Outfit', sans-serif;
  margin: 0;
  box-sizing: border-box !important;
}

body.auth-page .auth-header {
  text-align: center;
  flex: 0 0 auto;
}

body.auth-page .auth-content {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 10px 0;
  /* Add small vertical padding to content area */
}

body.auth-page .auth-footer {
  text-align: center;
  flex: 0 0 auto;
  padding-bottom: 12px;
}

body.auth-page .auth-card {
  width: 100%;
  max-width: 400px;
  backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: authFadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Adjustments for tight vertical spaces */
@media (max-height: 700px) {
  body.auth-page {
    padding: 10px !important;
    padding-bottom: calc(16px + env(safe-area-inset-bottom)) !important;
    gap: 6px !important;
  }

  body.auth-page .auth-header {
    padding-top: 4px;
  }

  body.auth-page .auth-logo {
    width: 36px;
    margin-bottom: 4px;
  }

  body.auth-page .auth-badge {
    padding: 4px 10px;
    font-size: 0.75rem;
  }

  body.auth-page .auth-card {
    padding: 14px;
    gap: 6px;
  }

  body.auth-page .auth-card input {
    padding: 11px !important;
    font-size: 14px !important;
  }

  body.auth-page .auth-card button.primary-btn {
    padding: 11px !important;
    font-size: 14px !important;
  }

  body.auth-page .auth-title {
    font-size: 18px;
  }

  body.auth-page .auth-subtitle {
    font-size: 12px;
    margin-bottom: 6px;
  }

  body.auth-page .auth-form {
    gap: 10px;
    margin-top: 12px;
  }

  body.auth-page .auth-divider {
    margin: 6px 0;
  }

  body.auth-page .auth-footer {
    padding-bottom: 4px;
  }

  body.auth-page .auth-switch {
    font-size: 12px;
  }

  body.auth-page .google-btn {
    padding: 10px 14px;
    font-size: 14px;
  }
}

/* Hide scrollbar on card for cleaner look */
body.auth-page .auth-card::-webkit-scrollbar {
  display: none;
}

body.auth-page .auth-card {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

@media (min-width: 1024px) {
  body.auth-page .auth-card {
    max-width: 440px;
    padding: 40px;
  }
}

body.auth-page .auth-title {
  font-size: 24px;
  font-weight: 700;
  color: white;
  margin-bottom: 4px;
}

body.auth-page .auth-subtitle {
  font-size: 14px;
  color: #94a3b8;
  margin-bottom: 12px;
}

@media (min-width: 1024px) {
  body.auth-page .auth-title {
    font-size: 32px;
  }
}

body.auth-page .auth-card input {
  width: 100% !important;
  padding: 14px !important;
  border-radius: 12px !important;
  background: rgba(255, 255, 255, 0.05) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  color: white !important;
  font-size: 15px !important;
  transition: all 0.3s ease !important;
}

body.auth-page .auth-card input:focus {
  border: 1px solid #3b82f6 !important;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.4) !important;
  background: rgba(255, 255, 255, 0.08) !important;
}

body.auth-page .auth-card button.primary-btn {
  width: 100% !important;
  padding: 14px !important;
  border-radius: 14px !important;
  background: linear-gradient(135deg, #3b82f6, #2563eb) !important;
  color: white !important;
  border: none !important;
  font-weight: 600 !important;
  font-size: 16px !important;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

body.auth-page .auth-card button.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.4);
}

body.auth-page .auth-card button.primary-btn:active {
  transform: scale(0.97);
}

body.auth-page .auth-logo {
  width: 60px;
  margin-bottom: 8px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 1024px) {
  body.auth-page .auth-logo {
    width: 80px;
  }
}

@keyframes authFloat {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }
}

@keyframes authFadeIn {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(10px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

body.auth-page .auth-switch {
  font-size: 14px;
  color: #94a3b8;
}

body.auth-page .auth-switch a {
  color: #3b82f6;
  text-decoration: none;
  font-weight: 600;
}

body.auth-page .auth-switch a:hover {
  text-decoration: underline;
}

/* Ensure modal is also on top and centered if shown on auth pages */
body.auth-page .modal {
  z-index: 10001 !important;
}

/* Onboarding Overlay */
.welcome-modal {
  z-index: 20000;
  pointer-events: auto;
}

.welcome-modal * {
  pointer-events: auto;
}

.onboarding {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 20000;
  padding: 20px;
  animation: fadeIn 0.3s ease;
}

.onboarding-card {
  background: #1e293b;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 40px;
  border-radius: 24px;
  text-align: center;
  max-width: 480px;
  width: 100%;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.8);
  animation: modalScaleIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  transition: transform 0.3s ease;
}

@keyframes modalScaleIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
  filter: brightness(1.1);
}

.primary-btn:active {
  transform: translateY(0);
}

.onboarding-card h2 {
  font-size: 28px;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #fff, #94a3b8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.onboarding-card p {
  color: #94a3b8;
  margin-bottom: 24px;
}

.onboarding-features {
  text-align: left;
  margin-bottom: 30px;
  background: rgba(255, 255, 255, 0.03);
  padding: 20px;
  border-radius: 16px;
}

.onboarding-features li {
  list-style: none;
  margin-bottom: 12px;
  color: #e2e8f0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.onboarding-card .primary-btn {
  padding: 14px 40px;
  font-size: 18px;
  border-radius: 14px;
}

/* Chat Message Animations */
.message {
  animation: messageSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
}

@keyframes messageSlideUp {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Resend Cooldown States */
.resend-btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  filter: grayscale(0.5);
  background: #334155 !important;
}

/* Verification Status Card Enhancement */
.verify-status {
  padding: 12px;
  border-radius: 12px;
  margin-top: 10px;
  font-size: 14px;
  text-align: center;
}

.verify-status.waiting {
  background: rgba(59, 130, 246, 0.1);
  color: #60a5fa;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.6;
  }
}

/* Follow-up Prompt Styles */
.followup-box {
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: fade-up 0.3s ease forwards;
}

.followup-arrow {
  color: #4CAF50;
  font-weight: bold;
}

.followup-text {
  color: var(--text-soft);
  font-size: 0.92rem;
}

/* ========================================================================
   Settings Page Modern Styles
   ======================================================================== */

.settings-page {
  background: var(--bg-deep);
  min-height: 100vh;
  padding: 40px 20px;
}

.settings-shell {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
  gap: 20px;
  flex-wrap: wrap;
}

.settings-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-top: 5px;
  background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.settings-intro {
  color: var(--text-soft);
  font-size: 1.1rem;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 480px), 1fr));
  gap: 25px;
}

@media (max-width: 768px) {
  .settings-grid {
    grid-template-columns: 1fr;
  }

  .settings-container {
    padding: 10px;
    width: 100%;
    overflow-x: hidden;
  }

  .settings-card {
    padding: 15px;
    width: 100%;
    max-width: 100%;
  }

  .settings-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
    width: 100%;
  }

  .settings-select {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .settings-grid {
    grid-template-columns: 1fr;
  }
}

.settings-card {
  display: flex;
  flex-direction: column;
  padding: 30px;
  height: 100%;
}

.card-header {
  margin-bottom: 25px;
}

.card-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 5px;
  color: var(--accent);
}

.card-header p {
  color: var(--text-soft);
  font-size: 0.95rem;
}

.card-content {
  display: flex;
  flex-direction: column;
  gap: 25px;
  flex: 1;
}

/* Row Styling */
.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.settings-row:last-child {
  border-bottom: none;
}

.row-info h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 3px;
}

.row-info p {
  font-size: 0.85rem;
  color: var(--text-soft);
  max-width: 300px;
}

/* Profile Preview */
.profile-preview-large {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 15px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 15px;
}

.profile-preview-large img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  object-fit: cover;
}

.profile-info h3 {
  font-size: 1.3rem;
  font-weight: 700;
}

/* Forms & Inputs */
.settings-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-group span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-soft);
}

.input-group input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 12px 15px;
  border-radius: 12px;
  color: white;
  font-family: inherit;
  font-size: 1rem;
}

.helper-text {
  font-size: 0.8rem !important;
  font-weight: 400 !important;
  opacity: 0.6;
}

.settings-select {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: white;
  padding: 10px 15px;
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  min-width: 180px;
  max-width: 100%;
}

.settings-select option {
  background-color: #0f172a;
  /* Matches --bg-main */
  color: white;
}

/* Theme Selector Modern */
.theme-selector-modern {
  display: flex;
  gap: 12px;
}

.theme-btn-card {
  width: 45px;
  height: 45px;
  border-radius: 12px;
  border: 2px solid transparent;
  padding: 4px;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
}

.theme-btn-card.active {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
}

.theme-btn-card .preview {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 8px;
}

.dark-preview {
  background: #0f172a;
}

.light-preview {
  background: #f8fafc;
}

.blue-preview {
  background: #1e3a8a;
}

.purple-preview {
  background: #4c1d95;
}

/* Usage Stats */
.usage-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 15px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.usage-info-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px;
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.1);
  border-radius: 12px;
  color: #10b981;
  font-size: 0.85rem;
}

/* Danger Zone */
.danger-section {
  border: 1px solid rgba(239, 68, 68, 0.15);
}

.danger-text {
  color: #ef4444 !important;
}

.danger-zone {
  margin-top: 10px;
  padding: 20px;
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.1);
  border-radius: 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.highlighted-row {
  background: rgba(59, 130, 246, 0.05);
  padding: 15px;
  border-radius: 12px;
  border-bottom: none;
}

.badge {
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.65rem;
  font-weight: 800;
  margin-left: 10px;
}

.success-badge {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.flex-center {
  display: flex;
  align-items: center;
}

.range-container {
  display: flex;
  align-items: center;
  gap: 15px;
  width: 100%;
  max-width: 250px;
}

.range-container input {
  flex: 1;
}

.connected-account {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 15px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50px;
}

.card-actions {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
}

.card-actions-minimal {
  margin-top: 15px;
}


/* ======================================================================== 
   Thinking Dots Animation 
   ======================================================================== */
.thinking-dots {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 0;
}

.thinking-dots span {
  width: 8px;
  height: 8px;
  background-color: var(--accent);
  border-radius: 50%;
  opacity: 0.4;
  animation: thinking-bounce 1.4s infinite ease-in-out both;
}

.thinking-dots span:nth-child(1) {
  animation-delay: -0.32s;
}

.thinking-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes thinking-bounce {

  0%,
  80%,
  100% {
    transform: scale(0.6);
    opacity: 0.4;
  }

  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* ======================================================================== 
   Settings Page Refactor - Navigation Style 
   ======================================================================== */
.settings-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

.settings-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  margin-top: 30px;
}

/* Sidebar Nav (Desktop) */
.settings-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-radius: 14px;
  color: var(--text-soft);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  background: transparent;
  border: 1px solid transparent;
}

.nav-item:hover {
  background: var(--surface-soft);
  color: var(--text-main);
}

.nav-item.active {
  background: var(--surface-strong);
  color: var(--accent);
  border-color: var(--border-strong);
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.1);
}

.nav-item svg {
  opacity: 0.7;
  transition: opacity var(--transition);
}

.nav-item.active svg {
  opacity: 1;
}

/* Section Visibility */
.settings-card.hidden {
  display: none !important;
}

/* Mobile Tabs (Override Sidebar) → Mobile Card Menu */
@media (max-width: 768px) {
  .settings-page {
    padding: 20px 0;
  }

  .settings-shell {
    padding: 16px 16px;
  }

  .settings-container {
    padding: 0;
    width: 100%;
    overflow-x: hidden;
  }

  .settings-header {
    text-align: center;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
  }

  .settings-header h1 {
    font-size: 1.8rem;
  }

  .settings-intro {
    font-size: 0.95rem;
  }

  .settings-back {
    width: 100%;
    justify-content: center;
  }

  .settings-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  /* ---- Mobile Nav: Vertical Card Menu ---- */
  .settings-nav {
    flex-direction: column;
    overflow-x: visible;
    padding: 0;
    margin: 0;
    gap: 6px;
  }

  /* Hide scrollbar overrides no longer needed */
  .settings-nav::-webkit-scrollbar {
    display: block;
  }

  .nav-item {
    flex: none;
    padding: 14px 16px;
    font-size: 1rem;
    white-space: normal;
    border-radius: 14px;
    background: var(--surface-soft, rgba(255, 255, 255, 0.03));
    border: 1px solid var(--border, rgba(255, 255, 255, 0.06));
    min-height: 56px;
  }

  .nav-item.active {
    background: var(--surface-strong, rgba(255, 255, 255, 0.06));
    border-color: var(--border-strong, rgba(255, 255, 255, 0.1));
  }

  .nav-item>svg:first-child {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
  }

  /* Show description text and chevron on mobile */
  .nav-item-text {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
  }

  .nav-item-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main, #e2e8f0);
  }

  .nav-item-desc {
    font-size: 0.78rem;
    color: var(--text-soft, #64748b);
    font-weight: 400;
    margin-top: 2px;
  }

  .nav-chevron {
    flex-shrink: 0;
    opacity: 0.4;
    margin-left: auto;
  }

  /* ---- Mobile Drill-down: When a section is active ---- */
  .settings-layout.section-active .settings-nav {
    display: none;
  }

  .settings-layout.section-active .settings-content {
    display: block;
  }

  .settings-layout:not(.section-active) .settings-content {
    display: none;
  }

  /* ---- Mobile Back Button ---- */
  .settings-mobile-back {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 0;
    margin-bottom: 12px;
    background: none;
    border: none;
    color: var(--accent, #3b82f6);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
  }

  .settings-mobile-back:hover {
    opacity: 0.8;
  }

  .settings-mobile-back svg {
    flex-shrink: 0;
  }

  /* ---- Mobile Settings Cards ---- */
  .settings-card {
    padding: 20px 16px;
    border-radius: 16px;
    width: 100%;
    max-width: 100%;
  }

  .card-header {
    margin-bottom: 20px;
  }

  .card-header h2 {
    font-size: 1.3rem;
  }

  /* ---- Mobile Profile Preview ---- */
  .profile-preview-large {
    flex-direction: column;
    text-align: center;
    gap: 12px;
    padding: 20px 16px;
  }

  .profile-preview-large img {
    width: 72px;
    height: 72px;
  }

  .profile-info {
    width: 100%;
    overflow: hidden;
  }

  .profile-info h3 {
    font-size: 1.15rem;
    word-break: break-word;
  }

  .profile-info p,
  #settingsEmailHeader {
    word-break: break-all;
    font-size: 0.85rem;
    color: var(--text-soft, #94a3b8);
  }

  /* ---- Mobile Settings Rows ---- */
  .settings-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    width: 100%;
    padding-bottom: 16px;
  }

  .row-info {
    width: 100%;
  }

  .row-info h3 {
    font-size: 1rem;
  }

  .row-info p {
    max-width: 100%;
    font-size: 0.82rem;
  }

  .settings-select {
    width: 100%;
    min-width: unset;
  }

  /* ---- Mobile Danger Zone ---- */
  .danger-zone {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
  }

  .danger-zone .primary-btn {
    width: 100%;
  }

  /* ---- Mobile Usage Stats ---- */
  .usage-stats-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
  }

  .stat-item {
    padding: 12px 8px;
  }

  .stat-value {
    font-size: 1.3rem;
  }

  .stat-label {
    font-size: 0.65rem;
  }

  /* ---- Mobile Range Container ---- */
  .range-container {
    max-width: 100%;
    width: 100%;
  }

  /* ---- Mobile Theme Selector ---- */
  .theme-selector-modern {
    flex-wrap: wrap;
    gap: 10px;
  }

  /* ---- Mobile Actions ---- */
  .card-actions {
    flex-direction: column;
  }

  .card-actions .primary-btn,
  .card-actions .ghost-btn {
    width: 100%;
  }

  .card-actions-minimal {
    margin-top: 12px;
  }

  .card-actions-minimal .ghost-btn {
    width: 100%;
  }

  /* ---- Mobile Connected Account ---- */
  .connected-account {
    width: 100%;
    justify-content: center;
  }

  /* ---- Mobile Highlighted Row ---- */
  .highlighted-row {
    padding: 12px;
    border-radius: 10px;
  }

  .highlighted-row .flex-center {
    flex-wrap: wrap;
    gap: 6px;
  }

  /* ---- Mobile Inputs ---- */
  .input-group input {
    padding: 14px 16px;
    font-size: 16px;
    /* Prevents iOS zoom on focus */
  }

  /* ---- Mobile Toggle Groups in Settings Rows ---- */
  .settings-row .toggle-group {
    align-self: flex-start;
  }

  /* ---- Mobile Button Touch Targets ---- */
  .ghost-btn,
  .primary-btn,
  .danger-btn {
    min-height: 44px;
    padding: 12px 20px;
  }

  /* ---- Mobile Usage Info Banner ---- */
  .usage-info-banner {
    font-size: 0.8rem;
    padding: 12px;
  }
}

/* Extra small screens (below 375px) */
@media (max-width: 375px) {
  .settings-shell {
    padding: 12px 12px;
  }

  .settings-header h1 {
    font-size: 1.5rem;
  }

  .settings-card {
    padding: 16px 12px;
  }

  .usage-stats-grid {
    grid-template-columns: 1fr;
  }

  .nav-item {
    padding: 12px 14px;
  }
}

/* Desktop: hide mobile-only elements */
@media (min-width: 769px) {
  .settings-mobile-back {
    display: none;
  }

  .nav-item-desc {
    display: none;
  }

  .nav-chevron {
    display: none;
  }

  .nav-item-text {
    display: contents;
  }

  .nav-item-label {
    font-size: inherit;
    font-weight: inherit;
    color: inherit;
  }
}

/* ========================================================================
   RAG System — Search Indicator, Sources Card, Live Badge
   ======================================================================== */

/* --- RAG Search Indicator (shown while fetching live info) --- */
.rag-search-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0 2px;
  font-size: 0.82rem;
  color: var(--text-soft);
  animation: ragFadeIn 0.3s ease;
}

.rag-search-indicator .rag-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3b82f6;
  animation: ragPulse 1.2s infinite ease-in-out;
  flex-shrink: 0;
}

.rag-search-indicator .rag-label {
  opacity: 0.85;
  letter-spacing: 0.01em;
}

@keyframes ragPulse {

  0%,
  100% {
    opacity: 0.4;
    transform: scale(0.85);
  }

  50% {
    opacity: 1;
    transform: scale(1.15);
  }
}

@keyframes ragFadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- RAG Live Badge (on messages that used retrieval) --- */
.rag-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.2);
  margin-left: 8px;
  vertical-align: middle;
  animation: ragFadeIn 0.4s ease;
}

.rag-badge::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #3b82f6;
}

/* --- Inline Source Chips (ChatGPT/Perplexity Style) --- */
.sources-wrapper {
  margin-top: 8px;
}

.sources-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 6px;
  border-radius: 20px;
  background: transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.sources-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.05);
}

.overlapping-icons {
  display: flex;
  align-items: center;
}

.overlap-icon,
.overlap-icon-fallback {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--bg-main, #0f172a);
  /* Match background color to create overlap cutout effect */
  background: white;
  margin-right: -8px;
  position: relative;
  object-fit: cover;
  flex-shrink: 0;
}

.overlap-icon-fallback {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.5rem;
  font-weight: bold;
}

.overlapping-icons>*:last-child {
  margin-right: 0;
}

.sources-toggle-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main, #e2e8f0);
}

.source-chips-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
  animation: ragFadeIn 0.3s ease;
}

.source-chips-container.hidden {
  display: none !important;
}

.source-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px 4px 6px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  text-decoration: none;
  transition: all 0.2s ease;
  max-width: 200px;
}

.source-chip:hover {
  background: var(--surface-strong);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

/* ======================================================================== 
   SPA Changelog View 
   ======================================================================== */
.changelog-view {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-main);
  z-index: 100;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  opacity: 1;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateY(0);
}

.changelog-view.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
}

.changelog-header {
  padding: 40px 20px 20px;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.changelog-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  color: var(--text-soft);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 12px;
  margin-left: -12px;
  border-radius: 8px;
  transition: background 0.2s, color 0.2s;
  align-self: flex-start;
}

.changelog-back-btn:hover {
  background: var(--surface-soft);
  color: var(--text-main);
}

.changelog-page-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin: 0;
  background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.changelog-content {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
  padding: 0 20px 80px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

/* Release Card Animations */
@keyframes changelogFadeInUp {
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes pulseNewBadge {
  0% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4); }
  70% { box-shadow: 0 0 0 6px rgba(99, 102, 241, 0); }
  100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

/* Release Card */
.release-card {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 30px;
  display: block; /* Support for <details> element */
  transition: all 0.3s ease;
  animation: changelogFadeInUp 0.5s ease backwards;
}

.release-card[open] {
  background: var(--surface);
  border-color: rgba(255, 255, 255, 0.1);
}

.release-card.is-latest {
  background: linear-gradient(145deg, var(--surface), var(--surface-soft));
  border: 1px solid var(--primary-color);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.15);
  position: relative;
  overflow: hidden;
}

.release-card.is-latest::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary-color);
  box-shadow: 0 0 10px var(--primary-color);
}

.release-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  list-style: none; /* Hide default details marker */
  outline: none;
}

.release-header::-webkit-details-marker {
  display: none;
}

.release-header-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.accordion-icon {
  width: 24px;
  height: 24px;
  color: var(--text-soft);
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.release-card[open] .accordion-icon {
  transform: rotate(180deg);
}

.release-sections {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  animation: changelogFadeInUp 0.3s ease forwards;
}

.new-badge {
  background: var(--primary-color);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
  animation: pulseNewBadge 2s infinite;
}

.release-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.release-version {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.release-badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.release-badge.major {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}
.release-badge.minor {
  background: rgba(167, 139, 250, 0.15);
  color: #a78bfa;
  border: 1px solid rgba(167, 139, 250, 0.3);
}
.release-badge.patch {
  background: rgba(148, 163, 184, 0.15);
  color: #94a3b8;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.release-date {
  color: var(--text-soft);
  font-size: 0.9rem;
}

.release-title {
  font-size: 1.2rem;
  color: var(--text-main);
  font-weight: 500;
  margin: 0;
}


.release-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title.added { color: #34d399; }
.section-title.improved { color: #60a5fa; }
.section-title.fixed { color: #fbbf24; }
.section-title.security { color: #f87171; }
.section-title.uiux { color: #c084fc; }
.section-title.performance { color: #fb923c; }

.section-items {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.section-items li {
  color: var(--text-soft);
  font-size: 0.95rem;
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.section-items li::before {
  content: "•";
  color: var(--border-strong);
  font-weight: bold;
}

@media (max-width: 768px) {
  .changelog-page-title {
    font-size: 2rem;
  }
  .release-card {
    padding: 20px;
  }
}

.source-favicon {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: white;
  /* Fallback for transparent favicons */
}

.source-favicon-fallback {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: bold;
  flex-shrink: 0;
}

.source-title {
  font-size: 0.75rem;
  color: var(--text-main, #e2e8f0);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .rag-search-indicator {
    font-size: 0.78rem;
  }

  .rag-badge {
    font-size: 0.62rem;
    padding: 1px 6px;
  }

  .source-chips-container {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    /* Hide scrollbar for cleaner look */
    scrollbar-width: none;
  }

  .source-chips-container::-webkit-scrollbar {
    display: none;
  }

  .source-chip {
    flex-shrink: 0;
    max-width: 180px;
  }
}