/* ═══════════════════════════════════════════════════════════════
   AI Study Planner  –  style.css
═══════════════════════════════════════════════════════════════ */

/* ── CSS Variables (Light theme) ─────────────────────────────── */
:root {
  --bg: #f0f4ff;
  --surface: #ffffff;
  --surface2: #f8faff;
  --border: #e2e8f0;
  --primary: #6366f1;
  --primary-dk: #4f46e5;
  --primary-lt: #e0e7ff;
  --accent: #10b981;
  --danger: #ef4444;
  --warn: #f59e0b;
  --text: #1e293b;
  --text-muted: #64748b;
  --sidebar-bg: #1e1b4b;
  --sidebar-txt: #c7d2fe;
  --sidebar-act: #6366f1;
  --shadow: 0 4px 24px rgba(99, 102, 241, .12);
  --radius: 14px;
  --radius-sm: 8px;
  --transition: .25s ease;
  --sidebar-w: 240px;
}

/* Dark theme */
[data-theme="dark"] {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface2: #162032;
  --border: #334155;
  --primary-lt: #312e81;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --shadow: 0 4px 24px rgba(0, 0, 0, .4);
}

/* ── Reset & Base ─────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  cursor: pointer;
  font-family: inherit;
}

input,
select,
textarea {
  font-family: inherit;
}

/* ── Utilities ────────────────────────────────────────────────── */
.hidden {
  display: none !important;
}

.mt-2 {
  margin-top: 1.25rem;
}

.error-msg {
  color: var(--danger);
  font-size: .85rem;
  margin-top: .4rem;
  min-height: 1.2em;
}

.success-msg {
  color: var(--accent);
  font-size: .85rem;
  margin-top: .4rem;
  min-height: 1.2em;
}

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1.2rem;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dk);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1.5px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  opacity: .85;
}

.btn-sm {
  padding: .35rem .8rem;
  font-size: .8rem;
}

/* ── Screen / Page visibility ─────────────────────────────────── */
.screen {
  display: none;
}

.screen.active {
  display: flex;
}

.page {
  display: none;
}

.page.active {
  display: block;
  animation: fadeIn .3s ease;
}

/* ── Welcome Screen ────────────────────────────────────────────── */
#welcome-screen.active {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #4338ca 0%, #6366f1 30%, #8b5cf6 60%, #06b6d4 100%);
  padding: 1rem;
  position: relative;
  overflow: hidden;
}

#welcome-screen::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 65%);
  top: -200px;
  right: -150px;
  border-radius: 50%;
  pointer-events: none;
  animation: orbFloat 8s ease-in-out infinite;
}

#welcome-screen::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 65%);
  bottom: -180px;
  left: -120px;
  border-radius: 50%;
  pointer-events: none;
  animation: orbFloat 10s ease-in-out infinite reverse;
}

#welcome-screen .auth-card {
  position: relative;
  z-index: 1;
}

.auth-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 420px;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.12),
    0 2px 8px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  animation: slideUp .5s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] .auth-card {
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid rgba(199, 210, 254, 0.15);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.3),
    0 2px 8px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

/* ── Welcome Badge ────────────────────────────────────────────── */
.welcome-badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .02em;
  padding: .35rem .85rem;
  border-radius: 99px;
  margin: 0 auto 1.2rem;
  width: fit-content;
  animation: fadeIn .6s ease .2s both;
}

[data-theme="dark"] .welcome-badge {
  background: rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.3);
}

/* ── Logo ──────────────────────────────────────────────────────── */
.logo {
  text-align: center;
  margin-bottom: 1.6rem;
}

.logo-icon {
  font-size: 3rem;
  line-height: 1;
}

.welcome-float {
  display: inline-block;
  animation: logoFloat 3s ease-in-out infinite;
}

.logo h1 {
  font-size: 1.65rem;
  font-weight: 800;
  color: #fff;
  margin: .4rem 0 .15rem;
  letter-spacing: -.01em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.logo p {
  color: rgba(255, 255, 255, 0.75);
  font-size: .88rem;
  font-weight: 400;
}

/* ── Welcome Form ──────────────────────────────────────────────── */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.welcome-form .input-group label {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
}

.welcome-form .input-group input {
  background: rgba(255, 255, 255, 0.12);
  border: 1.5px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  padding: .75rem 1rem;
  border-radius: 12px;
  transition: all .3s ease;
}

.welcome-form .input-group input::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.welcome-form .input-group input:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.08);
}

/* ── Welcome Button ────────────────────────────────────────────── */
.welcome-form .btn-primary {
  background: linear-gradient(135deg, #818cf8 0%, #6366f1 50%, #4f46e5 100%);
  color: #fff;
  font-weight: 700;
  padding: .8rem 1.4rem;
  border: none;
  border-radius: 12px;
  font-size: .95rem;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
  transition: all .3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.welcome-form .btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity .3s ease;
}

.welcome-form .btn-primary:hover {
  background: linear-gradient(135deg, #a5b4fc 0%, #6366f1 50%, #4f46e5 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.5);
}

.welcome-form .btn-primary:hover::before {
  opacity: 1;
}

.welcome-form .btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.welcome-form .btn-primary:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.6);
  outline-offset: 2px;
}

/* ── Welcome Hint ──────────────────────────────────────────────── */
.welcome-hint {
  text-align: center;
  margin-top: 1.1rem;
  font-size: .8rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: .01em;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.input-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.input-group input,
.input-group select {
  padding: .65rem .9rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  transition: border-color var(--transition);
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--primary);
}

/* ── Dashboard Layout ─────────────────────────────────────────── */
#dashboard-screen {
  flex-direction: row;
  min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 300;
  transition: transform var(--transition);
  overflow-y: auto;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 2rem;
  padding-left: .4rem;
  flex-shrink: 0;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .7rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--sidebar-txt);
  font-size: .92rem;
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-item:hover {
  background: rgba(255, 255, 255, .08);
  color: #fff;
}

.nav-item.active {
  background: var(--sidebar-act);
  color: #fff;
}

.sidebar-footer {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, .1);
  color: var(--sidebar-txt);
  font-size: .85rem;
  flex-shrink: 0;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .45);
  z-index: 200;
}

.sidebar-overlay.visible {
  display: block;
}

/* ── Main Content ─────────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* ── Top Bar ──────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1.8rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .04);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.streak-badge {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: #fff;
  padding: .35rem .9rem;
  border-radius: 20px;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .02em;
  white-space: nowrap;
}

.dark-toggle {
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.dark-toggle:hover {
  border-color: var(--primary);
  transform: rotate(20deg);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text);
  padding: .2rem;
}

/* ── Page sections ────────────────────────────────────────────── */
.page {
  padding: 1.8rem;
}

.page-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 1.4rem;
  color: var(--text);
}

/* ── Card ─────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  box-shadow: var(--shadow);
  transition: background var(--transition), border-color var(--transition);
}

.card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text);
}

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: .5rem;
}

.card-header-row h3 {
  margin-bottom: 0;
}

/* ── Stats Grid ───────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  box-shadow: var(--shadow);
}

.stat-icon {
  font-size: 1.6rem;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-label {
  font-size: .8rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* ── Dashboard two-col grid ───────────────────────────────────── */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* ── Inline Form ──────────────────────────────────────────────── */
.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  align-items: flex-end;
}

.inline-form input,
.inline-form select {
  padding: .6rem .9rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  min-width: 130px;
  transition: border-color var(--transition);
}

.inline-form input:focus,
.inline-form select:focus {
  outline: none;
  border-color: var(--primary);
}

/* ── Subject List ─────────────────────────────────────────────── */
.subject-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-bottom: .6rem;
  background: var(--surface2);
  transition: all var(--transition);
}

.subject-item:hover {
  border-color: var(--primary);
}

.subject-info {
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.subject-name {
  font-weight: 700;
  font-size: .95rem;
}

.subject-meta {
  font-size: .78rem;
  color: var(--text-muted);
}

.priority-badge {
  padding: .2rem .6rem;
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.p1 {
  background: #fee2e2;
  color: #b91c1c;
}

.p2 {
  background: #fef3c7;
  color: #92400e;
}

.p3 {
  background: #d1fae5;
  color: #065f46;
}

[data-theme="dark"] .p1 {
  background: #450a0a;
  color: #fca5a5;
}

[data-theme="dark"] .p2 {
  background: #451a03;
  color: #fcd34d;
}

[data-theme="dark"] .p3 {
  background: #022c22;
  color: #6ee7b7;
}

/* ── Timetable Grid ───────────────────────────────────────────── */
.tt-grid {
  display: grid;
  gap: .8rem;
}

.tt-day-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.tt-day-header {
  background: var(--primary);
  color: #fff;
  padding: .5rem 1rem;
  font-weight: 700;
  font-size: .9rem;
}

.tt-slots {
  padding: .6rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.tt-slot {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .5rem .8rem;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: .85rem;
}

.tt-slot input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

.tt-slot.done {
  opacity: .55;
  text-decoration: line-through;
}

.tt-time {
  color: var(--text-muted);
  font-size: .78rem;
  min-width: 80px;
}

.tt-subject {
  font-weight: 600;
}

/* ── Timetable Editor ─────────────────────────────────────────── */
.edit-slot-row {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .5rem .8rem;
  border-radius: 6px;
  background: var(--surface2);
  border: 1px solid var(--border);
  margin-bottom: .4rem;
  flex-wrap: wrap;
}

.edit-slot-time {
  font-size: .8rem;
  color: var(--text-muted);
  min-width: 110px;
  flex-shrink: 0;
}

.edit-slot-subject {
  font-weight: 600;
  font-size: .88rem;
  flex: 1;
  min-width: 80px;
}

.edit-slot-actions {
  display: flex;
  gap: .3rem;
  margin-left: auto;
  flex-shrink: 0;
}

.edit-slot-actions button {
  background: none;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: .2rem .45rem;
  font-size: .78rem;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition);
}

.edit-slot-actions button:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.edit-slot-inline {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
  padding: .6rem .8rem;
  border-radius: 6px;
  background: var(--primary-lt);
  border: 1.5px solid var(--primary);
  margin-bottom: .4rem;
}

.edit-slot-inline select,
.edit-slot-inline input[type="time"] {
  padding: .35rem .6rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: .85rem;
}

.edit-slot-inline select:focus,
.edit-slot-inline input[type="time"]:focus {
  outline: none;
  border-color: var(--primary);
}

/* ── Progress ─────────────────────────────────────────────────── */
.overall-progress {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .8rem;
  padding: .5rem 0;
}

.big-percent {
  font-size: 3rem;
  font-weight: 900;
  color: var(--primary);
}

.progress-bar-wrap {
  width: 100%;
  height: 14px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 99px;
  transition: width .6s ease;
}

.progress-item {
  padding: .9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: .7rem;
  background: var(--surface2);
}

.progress-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: .5rem;
}

.progress-item-name {
  font-weight: 700;
  font-size: .95rem;
}

.progress-item-pct {
  font-size: .85rem;
  color: var(--primary);
  font-weight: 700;
}

.progress-item-bar-wrap {
  height: 8px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: .5rem;
}

.progress-item-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 99px;
  transition: width .5s ease;
}

.progress-checklist {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  margin-top: .5rem;
}

.progress-check-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .83rem;
  color: var(--text-muted);
}

.progress-check-item input[type="checkbox"] {
  accent-color: var(--primary);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.progress-check-item.checked {
  color: var(--accent);
  text-decoration: line-through;
}

/* ── Daily Goals ──────────────────────────────────────────────── */
.goal-summary {
  font-size: .85rem;
  font-weight: 700;
  color: var(--primary);
}

.goal-item {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-bottom: .5rem;
  background: var(--surface2);
  transition: all var(--transition);
}

.goal-item input[type="checkbox"] {
  width: 17px;
  height: 17px;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

.goal-item.done {
  opacity: .55;
}

.goal-item.done .goal-label {
  text-decoration: line-through;
}

.goal-label {
  flex: 1;
  font-size: .9rem;
  font-weight: 500;
}

.goal-tag {
  font-size: .72rem;
  font-weight: 700;
  padding: .15rem .5rem;
  border-radius: 20px;
  background: var(--primary-lt);
  color: var(--primary);
}

.goal-delete {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  padding: .1rem .3rem;
  transition: color var(--transition);
}

.goal-delete:hover {
  color: var(--danger);
}

/* ── Exam Countdown ───────────────────────────────────────────── */
.exam-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-bottom: .6rem;
  background: var(--surface2);
  transition: all var(--transition);
}

.exam-item:hover {
  border-color: var(--primary);
}

.exam-info {
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.exam-name {
  font-weight: 700;
  font-size: .95rem;
}

.exam-date-str {
  font-size: .78rem;
  color: var(--text-muted);
}

.exam-countdown {
  font-size: 1.3rem;
  font-weight: 900;
  min-width: 60px;
  text-align: center;
}

.exam-countdown.urgent {
  color: var(--danger);
}

.exam-countdown.soon {
  color: var(--warn);
}

.exam-countdown.ok {
  color: var(--accent);
}

.exam-days-label {
  font-size: .7rem;
  color: var(--text-muted);
  text-align: center;
}

.exam-countdown-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Notes ────────────────────────────────────────────────────── */
.notes-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1rem;
  min-height: 520px;
}

.notes-sidebar-panel .card {
  height: 100%;
}

.note-list-item {
  padding: .65rem .9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-bottom: .4rem;
  cursor: pointer;
  background: var(--surface2);
  transition: all var(--transition);
}

.note-list-item:hover {
  border-color: var(--primary);
}

.note-list-item.active {
  border-color: var(--primary);
  background: var(--primary-lt);
}

.note-list-title {
  font-weight: 700;
  font-size: .88rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.note-list-preview {
  font-size: .75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.note-title-input {
  flex: 1;
  padding: .5rem .8rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  transition: border-color var(--transition);
  min-width: 0;
}

.note-title-input:focus {
  outline: none;
  border-color: var(--primary);
}

.note-textarea {
  width: 100%;
  margin-top: 1rem;
  min-height: 380px;
  padding: .9rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-size: .9rem;
  line-height: 1.6;
  resize: vertical;
  transition: border-color var(--transition);
}

.note-textarea:focus {
  outline: none;
  border-color: var(--primary);
}

/* ── Analytics ────────────────────────────────────────────────── */
.analytics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.bar-chart {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: .8rem;
}

.bar-label {
  font-size: .82rem;
  font-weight: 600;
  min-width: 90px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bar-track {
  flex: 1;
  height: 10px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width .6s ease;
}

.bar-val {
  font-size: .78rem;
  color: var(--text-muted);
  min-width: 36px;
  text-align: right;
}

.analytics-empty {
  color: var(--text-muted);
  font-size: .88rem;
  padding: .5rem 0;
}

/* ── Pomodoro ─────────────────────────────────────────────────── */
.pomodoro-card {
  text-align: center;
  max-width: 420px;
  margin: 0 auto;
}

.pomodoro-mode {
  font-size: .85rem;
  font-weight: 800;
  letter-spacing: .15em;
  color: var(--primary);
  margin-bottom: .5rem;
}

.pomodoro-timer {
  font-size: 5rem;
  font-weight: 900;
  color: var(--text);
  letter-spacing: .05em;
  line-height: 1;
  margin: .5rem 0;
}

.pomodoro-cycle {
  color: var(--text-muted);
  font-size: .85rem;
  margin-bottom: 1.2rem;
}

.pomodoro-controls {
  display: flex;
  gap: .7rem;
  justify-content: center;
}

.pomodoro-settings {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  font-size: .85rem;
  color: var(--text-muted);
}

.pomodoro-settings input {
  width: 55px;
  padding: .3rem .5rem;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  background: var(--surface2);
  color: var(--text);
  text-align: center;
}

/* ── Tips Grid ────────────────────────────────────────────────── */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.tip-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
}

.tip-card h4 {
  font-size: .9rem;
  font-weight: 700;
  margin-bottom: .4rem;
  color: var(--primary);
}

.tip-card p {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── Today Schedule ───────────────────────────────────────────── */
.today-slot {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .7rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-bottom: .5rem;
  background: var(--surface2);
  font-size: .88rem;
}

.today-slot input[type="checkbox"] {
  accent-color: var(--primary);
  width: 16px;
  height: 16px;
  cursor: pointer;
  flex-shrink: 0;
}

.today-slot.done {
  opacity: .5;
  text-decoration: line-through;
}

/* ── AI Study Guide ──────────────────────────────────────────── */
.study-guide-card .card-header-row {
  margin-bottom: .6rem;
}

.study-guide-toggle {
  background: var(--primary-lt);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.study-guide-toggle:hover {
  background: var(--primary);
  transform: scale(1.1);
}

[data-theme="dark"] .study-guide-toggle {
  background: rgba(99, 102, 241, 0.2);
}

[data-theme="dark"] .study-guide-toggle:hover {
  background: var(--primary);
}

.study-guide-steps {
  margin-top: .6rem;
  display: flex;
  flex-direction: column;
  gap: .45rem;
  animation: fadeIn .3s ease;
}

.study-guide-step {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  padding: .5rem .7rem;
  border-radius: var(--radius-sm);
  background: var(--surface2);
  border: 1px solid var(--border);
  font-size: .85rem;
  line-height: 1.4;
  color: var(--text);
}

.study-guide-step-icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: .05rem;
}

.study-guide-step-text {
  flex: 1;
}

/* ── Page Title Row ──────────────────────────────────────────── */
.page-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-title-row .page-title {
  margin-bottom: 0;
}

/* ── AI Overlay & Panel ──────────────────────────────────────── */
.ai-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn .2s ease;
}

.ai-overlay.hidden {
  display: none;
}

.ai-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  animation: slideUp .3s ease;
}

.ai-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.4rem;
  border-bottom: 1px solid var(--border);
}

.ai-panel-header h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.ai-panel-header-right {
  display: flex;
  align-items: center;
  gap: .6rem;
}

.ai-close-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: .2rem;
  border-radius: 4px;
  transition: all var(--transition);
}

.ai-close-btn:hover {
  background: var(--surface2);
  color: var(--danger);
}

.ai-panel-body {
  padding: 1.2rem 1.4rem;
  overflow-y: auto;
  flex: 1;
}

/* ── AI Usage Badge ──────────────────────────────────────────── */
.ai-usage-badge {
  font-size: .72rem;
  font-weight: 600;
  padding: .25rem .6rem;
  border-radius: 99px;
  white-space: nowrap;
}

.ai-badge-free {
  background: var(--surface2);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.ai-badge-premium {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #000;
}

/* ── AI Upload Zone ──────────────────────────────────────────── */
.ai-upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--surface2);
}

.ai-upload-zone:hover,
.ai-upload-zone.dragover {
  border-color: var(--primary);
  background: var(--primary-lt);
}

.ai-upload-icon {
  font-size: 2.5rem;
  margin-bottom: .5rem;
}

.ai-upload-text {
  font-size: .9rem;
  color: var(--text);
  margin-bottom: .3rem;
}

.ai-upload-link {
  color: var(--primary);
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
}

.ai-upload-hint {
  font-size: .75rem;
  color: var(--text-muted);
}

.ai-uploaded-files {
  margin-top: .8rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.ai-file-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .7rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .85rem;
}

.ai-file-icon {
  font-size: 1rem;
}

.ai-file-name {
  flex: 1;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ai-file-size {
  color: var(--text-muted);
  font-size: .75rem;
}

.ai-file-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: .9rem;
  padding: .1rem .3rem;
  border-radius: 4px;
}

.ai-file-remove:hover {
  color: var(--danger);
  background: var(--surface2);
}

/* ── AI Action Buttons ───────────────────────────────────────── */
.ai-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.ai-action-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .5rem .8rem;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.ai-action-btn:hover {
  border-color: var(--primary);
  background: var(--primary-lt);
  color: var(--primary);
  transform: translateY(-1px);
}

/* ── AI Chat Section ─────────────────────────────────────────── */
.ai-chat-section {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.ai-chat-messages {
  max-height: 300px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  margin-bottom: .8rem;
}

.ai-msg {
  display: flex;
  gap: .5rem;
  max-width: 85%;
}

.ai-msg-bot {
  align-self: flex-start;
}

.ai-msg-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.ai-msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  flex-shrink: 0;
}

.ai-msg-content {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .6rem .8rem;
  font-size: .85rem;
  line-height: 1.5;
}

.ai-msg-user .ai-msg-content {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.ai-msg-loading .ai-msg-content {
  padding: .8rem 1rem;
}

.ai-chat-input-row {
  display: flex;
  gap: .5rem;
}

.ai-chat-input {
  flex: 1;
  padding: .6rem .8rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-size: .85rem;
  transition: border-color var(--transition);
}

.ai-chat-input:focus {
  outline: none;
  border-color: var(--primary);
}

/* ── AI Results ──────────────────────────────────────────────── */
.ai-results-section {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.ai-result-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.ai-result-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem .8rem;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  font-size: .85rem;
}

.ai-result-icon {
  font-size: 1rem;
}

.ai-result-file {
  margin-left: auto;
  font-size: .72rem;
  color: var(--text-muted);
}

.ai-result-body {
  padding: .8rem;
  font-size: .85rem;
  line-height: 1.6;
  max-height: 300px;
  overflow-y: auto;
}

.ai-results-actions {
  display: flex;
  gap: .5rem;
  margin-top: .8rem;
}

/* ── AI Loading / Spinner ────────────────────────────────────── */
.ai-loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: .9rem;
}

.ai-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin: 0 auto .8rem;
}

.ai-spinner-inline {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ── Premium Page ────────────────────────────────────────────── */
.premium-hero {
  text-align: center;
  padding: 2rem 1rem;
  margin-bottom: 1.5rem;
}

.premium-hero-icon {
  font-size: 3rem;
  margin-bottom: .5rem;
}

.premium-hero h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: .3rem;
}

.premium-hero p {
  color: var(--text-muted);
  font-size: .9rem;
}

.premium-plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.premium-plan-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}

.premium-plan-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.premium-plan-featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), 0 8px 24px rgba(99, 102, 241, 0.15);
}

.premium-plan-badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: .25rem .6rem;
  border-radius: 99px;
  background: var(--surface2);
  color: var(--text-muted);
  width: fit-content;
  margin-bottom: .8rem;
}

.premium-badge-hot {
  background: var(--primary);
  color: #fff;
}

.premium-badge-save {
  background: var(--accent);
  color: #fff;
}

.premium-plan-price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}

.premium-plan-price span {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.premium-plan-period {
  font-size: .8rem;
  color: var(--text-muted);
  margin: .3rem 0 1rem;
}

.premium-plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin-bottom: 1.2rem;
  flex: 1;
}

.premium-feature-yes,
.premium-feature-no {
  font-size: .85rem;
  padding: .3rem 0;
}

.premium-feature-no {
  color: var(--text-muted);
  opacity: .5;
}

.premium-faq {
  max-width: 700px;
  margin: 0 auto;
}

.premium-faq h3 {
  text-align: center;
  margin-bottom: 1rem;
}

.premium-faq-item {
  padding: .8rem 0;
  border-bottom: 1px solid var(--border);
}

.premium-faq-item strong {
  display: block;
  margin-bottom: .3rem;
  font-size: .9rem;
}

.premium-faq-item p {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

/* ── Payment Modal ───────────────────────────────────────────── */
.payment-methods {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  margin-bottom: 1rem;
}

.payment-methods h4 {
  font-size: .9rem;
  margin-bottom: .3rem;
}

.payment-method-btn {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .8rem 1rem;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-align: left;
  width: 100%;
}

.payment-method-btn:hover {
  border-color: var(--primary);
  background: var(--primary-lt);
}

.payment-method-btn span:first-child {
  font-size: 1.5rem;
}

.payment-method-btn strong {
  font-size: .9rem;
}

.payment-method-btn small {
  color: var(--text-muted);
}

.payment-note {
  font-size: .75rem;
  color: var(--text-muted);
  text-align: center;
}

.payment-plan-info {
  text-align: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.payment-plan-info h4 {
  margin-bottom: .3rem;
}

.payment-amount {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
}

.payment-includes {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: .3rem;
}

.payment-success {
  text-align: center;
  padding: 1.5rem 0;
}

.payment-success-icon {
  font-size: 3rem;
  margin-bottom: .5rem;
}

.payment-success h4 {
  margin-bottom: .3rem;
}

/* ── Profile ──────────────────────────────────────────────────── */
.profile-header {
  text-align: center;
  padding: 1.5rem 1rem;
}

.profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 2rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.profile-username {
  font-size: 1.4rem;
  font-weight: 800;
}

.profile-since {
  font-size: .85rem;
  color: var(--text-muted);
  margin-top: .3rem;
}

/* ── Settings ─────────────────────────────────────────────────── */
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 0;
  border-bottom: 1px solid var(--border);
  gap: 1rem;
}

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

.setting-label {
  font-size: .92rem;
  font-weight: 600;
}

.setting-desc {
  font-size: .78rem;
  color: var(--text-muted);
  margin-top: .15rem;
}

.setting-select {
  padding: .4rem .7rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-size: .85rem;
  cursor: pointer;
}

.setting-select:focus {
  outline: none;
  border-color: var(--primary);
}

.setting-input {
  width: 70px;
  padding: .4rem .6rem;
  text-align: center;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-size: .9rem;
}

.setting-input:focus {
  outline: none;
  border-color: var(--primary);
}

/* Toggle switch */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 99px;
  cursor: pointer;
  transition: var(--transition);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: var(--transition);
}

.toggle-switch input:checked+.toggle-slider {
  background: var(--primary);
}

.toggle-switch input:checked+.toggle-slider::before {
  transform: translateX(20px);
}

/* ── About ────────────────────────────────────────────────────── */
.about-header {
  text-align: center;
  padding: 1rem 0 .5rem;
}

.about-logo {
  font-size: 3.5rem;
  margin-bottom: .5rem;
}

.about-title {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: .3rem;
}

.about-creator {
  font-size: .95rem;
  color: var(--text-muted);
  margin-bottom: .8rem;
}

.about-desc {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 520px;
  margin: 0 auto;
}

.about-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: .8rem;
  margin-top: 1rem;
}

.about-feature-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .9rem 1rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .88rem;
  font-weight: 600;
  transition: all var(--transition);
}

.about-feature-card:hover {
  border-color: var(--primary);
}

/* ── Toast ────────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.toast {
  background: var(--primary);
  color: #fff;
  padding: .8rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: .88rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  max-width: 280px;
  animation: slideUp .3s ease;
}

.toast.hydration {
  background: #0ea5e9;
}

.toast.success {
  background: var(--accent);
}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .analytics-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .hamburger {
    display: flex;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .inline-form {
    flex-direction: column;
  }

  .inline-form input,
  .inline-form select {
    width: 100%;
    min-width: unset;
  }

  .pomodoro-timer {
    font-size: 3.5rem;
  }

  .ai-panel {
    max-height: 95vh;
  }

  .ai-actions {
    gap: .4rem;
  }

  .ai-action-btn {
    font-size: .75rem;
    padding: .4rem .6rem;
  }

  .premium-plans {
    grid-template-columns: 1fr;
  }
}

.page {
  padding: 1rem;
}

.notes-layout {
  grid-template-columns: 1fr;
}

.analytics-grid {
  grid-template-columns: 1fr;
}

.dashboard-grid {
  grid-template-columns: 1fr;
}

.about-features-grid {
  grid-template-columns: repeat(2, 1fr);
}

.edit-slot-row {
  flex-direction: column;
  align-items: flex-start;
}

.edit-slot-actions {
  margin-left: 0;
}

.topbar {
  padding: .8rem 1rem;
}

.setting-row {
  flex-wrap: wrap;
}

.welcome-card {
  margin: 1rem;
  padding: 2rem 1.5rem;
}

.seo-footer-links {
  gap: .4rem .8rem;
}


@media (max-width: 420px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .auth-card {
    padding: 1.8rem 1.2rem;
  }

  .welcome-card {
    margin: .75rem;
    padding: 1.5rem 1rem;
  }

  .welcome-card .logo-icon {
    font-size: 2.5rem;
  }

  .welcome-card .logo h1 {
    font-size: 1.3rem;
  }

  .about-features-grid {
    grid-template-columns: 1fr;
  }

  .streak-badge {
    font-size: .72rem;
    padding: .3rem .6rem;
  }

  .page-title {
    font-size: 1.3rem;
  }

  .card {
    padding: 1rem;
  }

  .goal-item {
    flex-wrap: wrap;
  }

  .exam-item {
    flex-wrap: wrap;
    gap: .5rem;
  }

  .today-slot {
    flex-wrap: wrap;
    gap: .5rem;
  }

  .tt-slot {
    flex-wrap: wrap;
    gap: .5rem;
  }

  .seo-footer-copy {
    font-size: .75rem;
  }

  .ai-panel {
    max-height: 100vh;
    border-radius: 0;
  }

  .ai-overlay {
    padding: 0;
  }

  .ai-chat-messages {
    max-height: 200px;
  }

  .premium-plan-price {
    font-size: 1.8rem;
  }
}

/* ── Scrollbar ────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 99px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* ── Animations ───────────────────────────────────────────────── */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

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

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

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

@keyframes logoFloat {

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

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

@keyframes orbFloat {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  50% {
    transform: translate(20px, -15px) scale(1.05);
  }
}

@media (max-width: 768px) {
  .sidebar {
    height: 100vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

.sidebar {
  height: 100vh;
  overflow-y: auto !important;
}

/* ── SEO Footer (internal nav links on main app) ──────────── */
.seo-footer {
  background: #1e1b4b;
  color: #c7d2fe;
  text-align: center;
  padding: 1.2rem 1rem;
  font-size: .83rem;
}

.seo-footer-inner {
  max-width: 900px;
  margin: 0 auto;
}

.seo-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .5rem 1.2rem;
  margin-bottom: .5rem;
}

.seo-footer-links a {
  color: #c7d2fe;
  text-decoration: none;
  transition: color .2s;
}

.seo-footer-links a:hover {
  color: #fff;
}

.seo-footer-copy {
  opacity: .65;
}

.seo-footer-copy a {
  color: #c7d2fe;
}