:root {
  --primary: #6c2bd9;
  --primary-light: #8b5cf6;
  --primary-dark: #5b21b6;
  --secondary: #f59e0b;
  --bg-dark: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #22223a;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --text-bright: #ffffff;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  --border: rgba(255, 255, 255, 0.08);
  --chart-grid: rgba(255, 255, 255, 0.05);
  --chart-label: #94a3b8;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.2);
  --radius: 14px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

a, .btn {
  text-decoration: none !important;
}

a:hover {
  opacity: 0.9;
}

/* ========================================
   SCROLLBAR - NEUTRAL BG COLOR
   ======================================== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-card-hover);
  border-radius: 8px;
}

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

* {
  scrollbar-width: thin;
  scrollbar-color: var(--bg-card-hover) var(--bg-dark);
}

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

.app-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 16px 0;
  overflow-y: auto;
  z-index: 1000;
  transition: transform var(--transition), background var(--transition);
}

.sidebar-header {
  padding: 16px 20px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.sidebar-logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 20px;
  color: #fff;
}

.sidebar-title {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(to right, var(--primary-light), var(--text-bright));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-list {
  list-style: none;
  padding: 0 12px;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  transition: all var(--transition);
  margin-bottom: 4px;
  font-weight: 500;
}

.nav-item a:hover,
.nav-item.active a {
  background: rgba(108, 43, 217, 0.18);
  color: var(--primary-light);
}

.nav-item.active a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  background: var(--primary);
  border-radius: 2px;
}

.sidebar-welcome {
  margin-top: auto;
  padding: 24px 20px 16px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.sidebar-welcome p {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.sidebar-welcome .welcome-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.sidebar-welcome .divider {
  height: 2px;
  background: linear-gradient(to right, transparent, var(--primary), transparent);
  margin-bottom: 10px;
}

.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 24px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin var(--transition);
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.page-title {
  font-size: 26px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-title i {
  color: var(--primary);
}

.hamburger {
  display: none;
  font-size: 24px;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.hamburger:hover {
  background: var(--bg-card);
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.theme-toggle,
.notif-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.theme-toggle:hover,
.notif-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title i {
  color: var(--primary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(108, 43, 217, 0.05) 100%);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-icon.purple {
  background: rgba(108, 43, 217, 0.2);
  color: var(--primary-light);
}

.stat-icon.green {
  background: rgba(16, 185, 129, 0.2);
  color: var(--success);
}

.stat-icon.orange {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}

.stat-icon.blue {
  background: rgba(59, 130, 246, 0.2);
  color: var(--info);
}

.stat-icon.red {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.stat-info h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 4px;
  line-height: 1;
}

.stat-info p {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
}

.grid-2 {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.grid-equal {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.btn {
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(108, 43, 217, 0.4);
}

.btn-secondary {
  background: var(--bg-card-hover);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-dark);
  border-color: var(--primary);
  color: var(--primary-light);
}

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

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

.btn-warning {
  background: var(--warning);
  color: #000;
}

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

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 6px;
}

.btn-lg {
  padding: 14px 24px;
  font-size: 16px;
  border-radius: 12px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  font-size: 14px;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 43, 217, 0.25);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.task-list {
  max-height: 320px;
  overflow-y: auto;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-dark);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  animation: fadeIn 0.3s ease;
}

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

.task-item.done {
  opacity: 0.5;
  text-decoration: line-through;
}

.task-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.task-check.checked {
  background: var(--primary);
  color: #fff;
}

.task-text {
  flex: 1;
  font-size: 14px;
}

.task-time {
  color: var(--warning);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.task-delete {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-size: 16px;
  opacity: 0.5;
  transition: opacity var(--transition);
}

.task-delete:hover {
  opacity: 1;
}

.progress-container {
  background: var(--bg-dark);
  border-radius: 12px;
  height: 14px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 12px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.table-responsive {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.data-table th {
  color: var(--text-muted);
  font-weight: 600;
  background: var(--bg-dark);
}

.data-table tr:hover td {
  background: var(--bg-card-hover);
}

.chart-container {
  width: 100%;
  height: 280px;
  position: relative;
  background: linear-gradient(145deg, var(--bg-dark), var(--bg-card));
  border-radius: var(--radius);
  padding: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.chart-canvas {
  width: 100% !important;
  height: 100% !important;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.cal-day {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--bg-dark);
  color: var(--text-muted);
  font-weight: 500;
  padding: 4px;
}

.cal-date-num {
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
}

.cal-hours {
  font-size: 10px;
  font-weight: 600;
  margin-top: 2px;
  color: var(--primary-light);
}

.cal-day:hover {
  background: var(--primary);
  color: #fff;
}

.cal-day.has-data {
  background: rgba(108, 43, 217, 0.3);
  color: var(--text-main);
  border: 1px solid var(--primary);
}

.cal-day.today {
  background: var(--primary);
  color: #fff;
}

.cal-day.today .cal-hours {
  color: #fff !important;
}

.cal-header {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
  padding: 8px 0;
}

.pomodoro-display {
  font-size: 72px;
  font-weight: 900;
  text-align: center;
  padding: 32px;
  background: var(--bg-dark);
  border-radius: 24px;
  margin-bottom: 24px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 2px;
  position: relative;
  overflow: hidden;
}

.pomodoro-display::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(108, 43, 217, 0.1) 0%, transparent 70%);
}

.pomodoro-status {
  text-align: center;
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.pomodoro-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}

.session-count {
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  background: var(--bg-dark);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.session-count i {
  color: var(--warning);
}

.music-player {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(108, 43, 217, 0.1) 100%);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--border);
}

.album-art {
  width: 160px;
  height: 160px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: #fff;
  animation: pulse 2s infinite;
}

.player-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 16px 0;
}

.player-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 18px;
}

.player-btn:hover {
  background: var(--primary);
  color: #fff;
  transform: scale(1.05);
}

.player-btn.play-btn {
  width: 64px;
  height: 64px;
  font-size: 24px;
}

.progress-seek {
  width: 100%;
  height: 6px;
  background: var(--bg-dark);
  border-radius: 3px;
  cursor: pointer;
  margin: 12px 0;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 3px;
  width: 0;
  transition: width 0.1s linear;
}

.time-display {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.playlist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-dark);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.playlist-item:hover,
.playlist-item.active {
  border-color: var(--primary);
  background: rgba(108, 43, 217, 0.1);
}

.playlist-item.active {
  background: rgba(108, 43, 217, 0.2);
}

.playlist-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.playlist-info {
  flex: 1;
}

.playlist-name {
  font-weight: 600;
  font-size: 14px;
}

.playlist-duration {
  font-size: 12px;
  color: var(--text-muted);
}

.badge-container {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  width: 120px;
  height: 140px;
  background: var(--bg-dark);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.badge.earned {
  border-color: var(--primary);
  animation: badgeEarn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.badge.bronze {
  border-color: #cd7f32;
}

.badge.silver {
  border-color: #c0c0c0;
}

.badge.golden {
  border-color: #ffd700;
}

.badge-icon {
  font-size: 40px;
}

.badge.bronze .badge-icon {
  color: #cd7f32;
}

.badge.silver .badge-icon {
  color: #c0c0c0;
}

.badge.golden .badge-icon {
  color: #ffd700;
}

.badge-name {
  font-size: 14px;
  font-weight: 700;
}

.badge-desc {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
}

.motivation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  padding-bottom: 24px;
}

.quote-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.quote-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.quote-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

.quote-text {
  font-size: 18px;
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 16px;
  color: var(--text-main);
  position: relative;
}

.quote-text::before {
  content: '\201C';
  font-size: 48px;
  color: var(--primary);
  opacity: 0.3;
  position: absolute;
  top: -24px;
  left: -12px;
  font-family: serif;
}

.quote-author {
  color: var(--primary-light);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 14px;
}

.quote-sinhala {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(108, 43, 217, 0.05);
  padding: 0 12px;
  border-radius: var(--radius-sm);
}

.quote-sinhala.show {
  opacity: 1;
  max-height: 300px;
  padding: 12px;
  margin-top: 8px;
  margin-bottom: 12px;
}

.translate-btn {
  margin-top: 4px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 7px 16px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 12px;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.fade-in-anim {
  animation: fadeInQuote 0.5s ease forwards;
  opacity: 0;
}

@keyframes fadeInQuote {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.countdown-display {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 24px 0;
}

.countdown-box {
  background: var(--bg-dark);
  border-radius: 16px;
  padding: 20px;
  text-align: center;
  border: 1px solid var(--border);
}

.countdown-value {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.countdown-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 6px;
}

.paper-link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-dark);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text-main);
  transition: all var(--transition);
  margin-bottom: 12px;
}

.paper-link:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.paper-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(59, 130, 246, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--info);
}

.paper-info h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.paper-info p {
  font-size: 13px;
  color: var(--text-muted);
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin: 16px 0;
}

.theme-option {
  padding: 12px;
  border-radius: 12px;
  border: 2px solid var(--border);
  background: var(--bg-dark);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.theme-option.active {
  border-color: var(--primary);
  background: rgba(108, 43, 217, 0.2);
}

.theme-preview {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  margin: 0 auto 6px;
}

.theme-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}

.contact-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  background: var(--bg-dark);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 16px;
}

.contact-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: #fff;
  flex-shrink: 0;
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
}

.stars-container {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin: 24px 0;
}

.star-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 36px;
  cursor: pointer;
  transition: all var(--transition);
  padding: 4px;
}

.star-btn:hover,
.star-btn.active {
  color: var(--warning);
  transform: scale(1.2);
}

.faq-item {
  background: var(--bg-dark);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.faq-question {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--bg-card-hover);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s;
  padding: 0 20px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 20px 16px;
}

.faq-item.open .faq-toggle {
  transform: rotate(180deg);
}

.chat-container {
  height: 500px;
  display: flex;
  flex-direction: column;
  background: var(--bg-dark);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.5;
  animation: messageSlide 0.3s ease;
}

.message.bot {
  background: var(--bg-card);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.message.user {
  background: var(--primary);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  color: #ffffff !important;
}

.chat-options {
  padding: 16px 20px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat-option-btn {
  padding: 10px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  cursor: pointer;
  text-align: left;
  transition: all var(--transition);
  font-size: 13px;
}

.chat-option-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
}

.site-footer {
  margin-top: auto;
  padding: 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
}

.site-footer a {
  color: var(--primary-light);
  text-decoration: none;
  font-weight: 600;
}

.site-footer a:hover {
  text-decoration: underline;
}

.notification {
  position: fixed;
  top: 24px;
  right: 24px;
  padding: 14px 20px;
  background: var(--bg-card);
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateX(120%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.notification.show {
  transform: translateX(0);
}

.notification i {
  color: var(--primary);
  font-size: 20px;
}

.confetti {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 999;
  display: none;
}

.overlay.show {
  display: block;
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  z-index: 1000;
  min-width: 300px;
  max-width: 500px;
  width: 90%;
  opacity: 0;
  transition: all var(--transition);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.modal.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes messageSlide {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes badgeEarn {
  0% {
    transform: scale(0.5);
    opacity: 0;
  }
  60% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
}

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

@keyframes progress {
  from {
    width: 0;
  }
}

/* ========================================
   QUICK STATS (Professional Clean Style)
   ======================================== */
.quick-stats-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 4px 0;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.stat-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.stat-row:hover {
  background: rgba(108, 43, 217, 0.05);
  transform: translateX(2px);
}

.stat-row span {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
}

.stat-row strong {
  color: var(--primary-light);
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  background: rgba(108, 43, 217, 0.12);
  padding: 4px 10px;
  border-radius: 6px;
  min-width: 45px;
  text-align: center;
  transition: all var(--transition);
}

.stat-row:hover strong {
  background: rgba(108, 43, 217, 0.18);
  transform: scale(1.05);
}

/* ========================================
   GREETING BANNER - DARK MODE
   ======================================== */
.greeting-banner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.greeting-content {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
}

.greeting-avatar {
  width: 100px;
  height: 100px;
  border-radius: 20px;
  object-fit: cover;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.greeting-avatar:hover {
  transform: scale(1.05);
}

.greeting-text-container {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.greeting-full {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.3px;
}

.greeting-sub {
  font-size: 13px;
  color: var(--text-muted);
}

/* ✅ Light mode override */
body.light .greeting-banner {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
}

/* ========================================
   PROFILE PAGE STYLES
   ======================================== */
.profile-container {
  max-width: 900px;
  margin: 0 auto;
}

/* ✅ DESKTOP: 7 columns = 2 rows for 14 avatars */
.avatar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 14px;
  padding: 10px 0;
}

.avatar-option {
  position: relative;
  cursor: pointer;
  border-radius: 14px;
  overflow: hidden;
  border: 2px solid transparent;
  transition: all var(--transition);
  background: var(--bg-dark);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-option:hover {
  border-color: var(--primary-light);
  transform: translateY(-3px);
}

.avatar-option.selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 43, 217, 0.15);
}

.avatar-option img {
  width: 85%;
  height: 85%;
  object-fit: cover;
  border-radius: 10px;
  transition: transform var(--transition);
}

.avatar-option:hover img {
  transform: scale(1.05);
}

.avatar-check {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 11px;
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--transition);
}

.avatar-option.selected .avatar-check {
  opacity: 1;
  transform: scale(1);
}

.profile-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.form-actions .btn {
  flex: 1;
  min-width: 140px;
  justify-content: center;
  padding: 12px 20px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.form-actions .btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
}

.form-actions .btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(108, 43, 217, 0.4);
}

.form-actions .btn-secondary {
  background: var(--bg-card-hover);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.form-actions .btn-secondary:hover {
  background: var(--bg-dark);
  border-color: var(--primary);
  color: var(--primary-light);
}

.char-counter {
  font-size: 11px;
  color: var(--text-muted);
  text-align: right;
  margin-top: 4px;
}

.greeting-preview {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--bg-dark);
  border-radius: var(--radius-sm);
}

.preview-avatar {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  object-fit: cover;
}

.preview-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.preview-text .greeting-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.preview-text .subtext {
  font-size: 12px;
  color: var(--text-muted);
}

/* ========================================
   COUNTDOWN STYLES
   ======================================== */
.countdown-list-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.countdown-item {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.countdown-item:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.countdown-item.expired {
  opacity: 0.6;
  border-color: var(--danger);
}

.countdown-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
}

.countdown-item.expired::before {
  background: var(--danger);
}

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

.countdown-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

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

.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 10px;
}

.countdown-box {
  background: var(--bg-card);
  padding: 12px 8px;
  border-radius: 10px;
  text-align: center;
}

.countdown-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-light);
  line-height: 1;
}

.countdown-item.expired .countdown-value {
  color: var(--danger);
}

.countdown-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 4px;
  letter-spacing: 0.5px;
}

.countdown-date {
  font-size: 12px;
  color: var(--text-muted);
  text-align: right;
}

.dash-cd-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.dash-cd-item:last-child {
  border-bottom: none;
}

.dash-cd-name {
  font-weight: 600;
  color: var(--text-main);
  font-size: 13px;
}

.dash-cd-days {
  font-weight: 700;
  color: var(--warning);
  font-size: 13px;
}

.share-toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  color: var(--text-main);
  padding: 12px 20px;
  border-radius: 30px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s;
}

.share-toast.show {
  opacity: 1;
}

/* ========================================
   POMODORO FULLSCREEN & UTILITIES
   ======================================== */
.pomodoro-modes {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
}

.mode-btn {
  padding: 8px 16px;
  border: 1px solid var(--border);
  background: var(--bg-dark);
  color: var(--text-muted);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
  font-weight: 500;
}

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

.mode-btn:hover:not(.active) {
  background: var(--bg-card-hover);
}

.pomodoro-main.fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  background: var(--bg-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  padding: 20px;
}

.pomodoro-main.fullscreen .pomodoro-display {
  font-size: 15vw;
  padding: 20px;
  background: transparent;
  box-shadow: none;
}

.pomodoro-main.fullscreen .pomodoro-status {
  font-size: 5vw;
  margin-bottom: 30px;
}

.pomodoro-main.fullscreen .session-count,
.pomodoro-main.fullscreen .pomodoro-modes {
  display: none;
}

.pomodoro-main.fullscreen .pomodoro-controls {
  gap: 20px;
}

.pomodoro-main.fullscreen .pomodoro-controls .btn {
  font-size: 24px;
  padding: 16px 24px;
}

.session-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--bg-dark);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  font-size: 14px;
  border: 1px solid var(--border);
}

.session-item .sess-time {
  color: var(--text-muted);
  font-size: 12px;
}

.how-to-use-content {
  padding: 10px 0;
}

.how-to-use-content ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.how-to-use-content li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
}

.how-to-use-content li:last-child {
  border-bottom: none;
}

.how-to-use-content li strong {
  color: var(--text-main);
}

/* ========================================
   MOBILE RESPONSIVE - COMPLETE
   ======================================== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
    padding: 16px;
  }
  
  .hamburger {
    display: flex;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px;
  }
  
  .stat-mobile-hide {
    display: none !important;
  }
  
  .stat-card {
    padding: 10px 8px;
    gap: 8px;
  }
  
  .stat-icon {
    width: 34px;
    height: 34px;
    font-size: 15px;
    border-radius: 8px;
  }
  
  .stat-info h3 {
    font-size: 17px;
  }
  
  .stat-info p {
    font-size: 10px;
  }
  
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .countdown-display {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .theme-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .pomodoro-display {
    font-size: 48px;
    padding: 24px;
  }
  
  .quote-text {
    font-size: 16px;
  }
  
  .page-title {
    font-size: 20px;
  }
  
  .motivation-grid {
    grid-template-columns: 1fr;
  }
  
  /* ✅ Greeting Banner Mobile */
  .greeting-content {
    padding: 14px 16px;
    gap: 12px;
  }
  
  .greeting-avatar {
    width: 60px;
    height: 60px;
  }
  
  .greeting-full {
    font-size: 18px;
  }
  
  .greeting-sub {
    font-size: 12px;
  }
  
  /* ✅ Profile Mobile - 3 columns */
  .avatar-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .form-actions .btn {
    width: 100%;
  }
  
  .greeting-preview {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 600px) {
  .countdown-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .countdown-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .greeting-avatar {
    width: 52px;
    height: 52px;
  }
  
  .preview-avatar {
    width: 48px;
    height: 48px;
  }
  
  /* ✅ Small Mobile: 3 columns, compact */
  .avatar-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
  
  .avatar-option {
    border-radius: 10px;
  }
  
  .avatar-check {
    width: 18px;
    height: 18px;
    font-size: 10px;
    top: 4px;
    right: 4px;
  }
}

/* ========================================
   LIGHT MODE & THEME VARIATIONS
   ======================================== */
body.light {
  --bg-dark: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-bright: #0f172a;
  --border: rgba(0, 0, 0, 0.1);
  --chart-grid: rgba(0, 0, 0, 0.05);
  --chart-label: #64748b;
}

body.theme-red {
  --primary: #ef4444;
  --primary-light: #f87171;
  --primary-dark: #dc2626;
}

body.theme-green {
  --primary: #10b981;
  --primary-light: #34d399;
  --primary-dark: #059669;
}

body.theme-blue {
  --primary: #3b82f6;
  --primary-light: #60a5fa;
  --primary-dark: #2563eb;
}

body.theme-yellow {
  --primary: #eab308;
  --primary-light: #facc15;
  --primary-dark: #ca8a04;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.hidden { display: none !important; }
.w-full { width: 100%; }

/* ========================================
PREMIUM POPUP STYLES
======================================== */
.premium-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(4px);
}

.premium-popup {
    background: var(--bg-card);
    border: 2px solid var(--warning);
    border-radius: var(--radius);
    padding: 40px;
    max-width: 450px;
    width: 90%;
    text-align: center;
    position: relative;
    animation: popupSlide 0.3s ease;
    box-shadow: 0 8px 32px rgba(245, 158, 11, 0.3);
}

@keyframes popupSlide {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.premium-popup-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all var(--transition);
}

.premium-popup-close:hover {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
    transform: rotate(90deg);
}

.premium-popup-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    animation: float 3s ease-in-out infinite;
}

.premium-popup-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.premium-popup h2 {
    font-size: 28px;
    background: linear-gradient(135deg, var(--warning), #fbbf24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.premium-popup p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 24px;
}

/* Locked avatar styles */
.avatar-option.locked {
    opacity: 0.6;
    cursor: not-allowed;
    position: relative;
}

.avatar-option.locked::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 14px;
    z-index: 1;
}

.avatar-lock {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--warning);
    font-size: 18px;
    z-index: 2;
    box-shadow: var(--shadow);
}

/* Premium navigation item */
.premium-nav-item {
    position: relative;
}

.premium-nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), transparent);
    border-radius: 8px;
    pointer-events: none;
}

.premium-link {
    display: flex;
    align-items: center;
    font-weight: 700;
}

/* Light mode adjustments */
body.light .premium-popup {
    background: #ffffff;
    box-shadow: 0 8px 32px rgba(245, 158, 11, 0.2);
}