/* ===== IMPORTS ===== */
@import url('https://fonts.googleapis.com/css2?family=SF+Pro+Display:wght@300;400;500;600;700&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
  --primary: #007AFF;
  --primary-light: #34C759;
  --secondary: #5856D6;
  --accent: #FF2D55;
  --warning: #FF9500;
  --success: #34C759;

  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-tertiary: #efefef;
  --text-primary: #000000;
  --text-secondary: #666666;
  --text-tertiary: #999999;
  --border: #e5e5ea;

  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(200, 200, 200, 0.2);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  
  --radius: 20px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #1c1c1e;
  --bg-tertiary: #2c2c2e;
  --text-primary: #ffffff;
  --text-secondary: #999999;
  --text-tertiary: #666666;
  --border: #3a3a3c;

  --glass-bg: rgba(30, 30, 35, 0.8);
  --glass-border: rgba(150, 150, 150, 0.2);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
  color: var(--text-primary);
  transition: var(--transition);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--text-tertiary);
  border-radius: 4px;
}

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

/* ===== NAVBAR ===== */
.navbar {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--glass-shadow);
}

.nav-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.brand-icon {
  width: 30px;
  height: 30px;
  display: block;
  flex-shrink: 0;
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border: none;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle-icon {
  width: 20px;
  height: 20px;
  display: block;
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  transform: scale(1.1);
}

/* ===== MAIN LAYOUT ===== */
.main-container {
  display: flex;
  min-height: calc(100vh - 64px);
  gap: 0;
}

.sidebar {
  width: 240px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--glass-border);
  padding: 24px 16px;
  position: sticky;
  top: 64px;
  max-height: calc(100vh - 64px);
  overflow-y: auto;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-primary);
  text-decoration: none;
  border-radius: 12px;
  transition: var(--transition);
  cursor: pointer;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-item:hover {
  background: var(--bg-secondary);
  color: var(--primary);
}

.nav-item.active {
  background: var(--primary);
  color: white;
}

.nav-icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  display: block;
  flex-shrink: 0;
}

.nav-text {
  flex: 1;
}

/* ===== CONTENT AREA ===== */
.content-area {
  flex: 1;
  padding: 32px 48px;
  overflow-y: auto;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.tab-content {
  display: none;
  animation: fadeIn 0.4s ease-in;
}

.tab-content.active {
  display: block;
}

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

/* ===== GLASS CARD ===== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--glass-shadow);
  margin-bottom: 24px;
  transition: var(--transition);
}

.glass-card:hover {
  border-color: var(--primary);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.card-header {
  margin-bottom: 28px;
}

.card-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 400;
}

/* ===== DASHBOARD ===== */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.stats-overview {
  grid-column: 1 / -1;
}

.stats-overview h2 {
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.stat-card {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 24px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.2);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  display: block;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.9;
  font-weight: 500;
}

.icon-title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.heading-icon {
  width: 24px;
  height: 24px;
  display: block;
  flex-shrink: 0;
}

.ui-icon {
  width: 1.1em;
  height: 1.1em;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}

.stat-label-icon {
  width: 14px;
  height: 14px;
  display: inline-block;
  margin-right: 6px;
  vertical-align: -2px;
}

.quick-timer {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.mini-timer {
  margin: 20px 0;
}

.next-goal {
  display: flex;
  flex-direction: column;
}

.goal-preview {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 150px;
}

/* ===== BUTTONS ===== */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  box-shadow: 0 8px 20px rgba(0, 122, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 122, 255, 0.4);
}

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

.btn-secondary:hover {
  background: var(--bg-tertiary);
}

.btn-danger {
  background: var(--accent);
  color: white;
  box-shadow: 0 8px 20px rgba(255, 45, 85, 0.3);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 45, 85, 0.4);
}

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

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-icon:hover:not(:disabled) {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-icon:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ===== INPUTS ===== */
.glass-input {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 12px 16px;
  border-radius: 12px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
  width: 100%;
  margin-bottom: 16px;
}

.glass-input:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--bg-primary);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.input-group {
  display: flex;
  gap: 8px;
  align-items: center;
}

.input-group input {
  flex: 1;
}

.timer-settings .input-group input[type="number"] {
  min-width: 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font: inherit;
  font-weight: 600;
  text-align: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: var(--transition);
  -moz-appearance: textfield;
}

.timer-settings .input-group input[type="number"]::-webkit-outer-spin-button,
.timer-settings .input-group input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.timer-settings .input-group input[type="number"]:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--bg-secondary);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.18);
}

[data-theme="dark"] .timer-settings {
  background: rgba(30, 30, 35, 0.92);
  border: 1px solid var(--glass-border);
}

[data-theme="dark"] .timer-settings .setting-group label {
  color: var(--text-primary);
}

[data-theme="dark"] .timer-settings .input-group input[type="number"] {
  background: var(--bg-tertiary);
  border-color: rgba(255, 255, 255, 0.14);
  color: var(--text-primary);
}

[data-theme="dark"] .timer-settings .input-group input[type="number"]::placeholder {
  color: var(--text-tertiary);
}

[data-theme="dark"] .timer-settings .input-group input[type="number"]:focus {
  background: var(--bg-secondary);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.28);
}

/* ===== TIMER ===== */
.timer-display {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 40px auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timer-circle {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.timer-bg {
  fill: none;
  stroke: var(--bg-secondary);
  stroke-width: 8;
}

.timer-progress {
  fill: none;
  stroke: url(#gradient);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 565.48;
  stroke-dashoffset: 565.48;
  transition: stroke-dashoffset 1s linear;
}

.timer-text {
  position: absolute;
  text-align: center;
  width: 100%;
}

.timer-minutes,
.timer-seconds {
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timer-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 8px;
  font-weight: 500;
}

.timer-controls {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin: 32px 0;
  flex-wrap: wrap;
}

.timer-settings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin: 32px 0;
  padding: 24px;
  background: var(--bg-secondary);
  border-radius: 16px;
}

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

.setting-group label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

/* ===== STATS GRID ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.stat-item {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.1), rgba(88, 86, 214, 0.1));
  padding: 20px;
  border-radius: 16px;
  text-align: center;
  border: 1px solid var(--glass-border);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
}

/* ===== METHODS ===== */
.methods-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.method-btn-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 16px;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: 16px;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
  font-weight: 500;
}

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

.method-btn-card.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-color: var(--primary);
}

.method-emoji {
  width: 28px;
  height: 28px;
  display: block;
}

.inline-guide-icon {
  width: 16px;
  height: 16px;
  display: inline-block;
  vertical-align: -2px;
}

.method-name {
  font-weight: 600;
  color: var(--text-primary);
}

.method-btn-card.active .method-name {
  color: white;
}

.method-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.method-btn-card.active .method-desc {
  color: rgba(255, 255, 255, 0.8);
}

.method-content {
  display: none;
  animation: fadeIn 0.4s ease-in;
}

.method-content.active {
  display: block;
}

.method-content-header {
  margin-bottom: 24px;
}

.method-content-header h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.method-content-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.method-guide {
  margin-top: 32px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.guide-item {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.05), rgba(88, 86, 214, 0.05));
  padding: 20px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.guide-icon {
  width: 28px;
  height: 28px;
  display: block;
  flex-shrink: 0;
}

.guide-problem {
  font-weight: 600;
  color: var(--text-primary);
}

.guide-solution {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
}

/* ===== TIME BLOCKING ===== */
.timeblock-scheduler {
  background: var(--bg-secondary);
  padding: 20px;
  border-radius: 16px;
  margin-bottom: 24px;
}

.timeblock-list {
  display: grid;
  gap: 12px;
}

.timeblock-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: var(--transition);
}

.timeblock-item:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.timeblock-time {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  min-width: 70px;
  text-align: center;
}

.timeblock-info {
  flex: 1;
}

.timeblock-task {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeblock-duration {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===== EAT THE FROG ===== */
.eatfrog-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.frog-task-input {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.frog-tasks-list {
  display: grid;
  gap: 12px;
}

.frog-tasks-section h4 {
  margin-bottom: 16px;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.frog-task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px;
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.05), rgba(88, 86, 214, 0.05));
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  transition: var(--transition);
}

.frog-task-item:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.frog-task-item.completed {
  opacity: 0.7;
  background: linear-gradient(135deg, rgba(52, 199, 89, 0.05), rgba(52, 199, 89, 0.1));
}

.frog-task-text {
  flex: 1;
  color: var(--text-primary);
}

.frog-task-item.completed .frog-task-text {
  text-decoration: line-through;
  color: var(--text-secondary);
}

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

/* ===== NOTES ===== */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}

.note-item {
  padding: 20px;
  border-radius: 16px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.note-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
}

.note-title {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.note-preview {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.note-meta {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.color-picker {
  display: flex;
  gap: 12px;
  margin: 16px 0;
}

.color-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.color-btn:hover,
.color-btn.selected {
  transform: scale(1.15);
  border-color: var(--text-primary);
}

/* ===== FLASHCARDS ===== */
.decks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.deck-item {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 24px;
  border-radius: 16px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.2);
}

.deck-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 122, 255, 0.3);
}

.deck-info {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 16px;
}

.deck-name {
  font-weight: 700;
  font-size: 1.2rem;
}

.deck-count {
  background: rgba(255, 255, 255, 0.2);
  padding: 6px 12px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
}

.flashcard {
  width: 100%;
  max-width: 400px;
  height: 250px;
  margin: 40px auto;
  cursor: pointer;
  perspective: 1000px;
}

.flashcard-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.flashcard.flipped .flashcard-inner {
  transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
  position: absolute;
  width: 100%;
  height: 100%;
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 16px;
  backface-visibility: hidden;
}

.flashcard-back {
  transform: rotateY(180deg);
  background: linear-gradient(135deg, var(--secondary), var(--accent));
}

.flashcard-front p,
.flashcard-back p {
  font-size: 1.3rem;
  font-weight: 600;
}

/* ===== GOALS ===== */
.goals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.goal-item {
  padding: 20px;
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.05), rgba(88, 86, 214, 0.05));
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  transition: var(--transition);
  cursor: pointer;
}

.goal-item:hover {
  border-color: var(--primary);
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.1);
}

.goal-progress {
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 4px;
  margin: 16px 0;
  overflow: hidden;
}

.goal-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 4px;
  transition: width 0.3s ease;
}

.goal-status {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===== TRACKER ===== */
.tracker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
}

.summary-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}

.tracking-chart {
  min-height: 300px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 12px;
  padding: 20px;
  background: var(--bg-secondary);
  border-radius: 16px;
}

.chart-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  border-radius: 8px 8px 0 0;
  min-height: 40px;
  max-width: 50px;
  position: relative;
  transition: var(--transition);
}

.chart-bar:hover {
  filter: brightness(1.1);
  transform: scaleY(1.05);
}

.daily-stats {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
}

.daily-stat {
  background: var(--bg-secondary);
  padding: 16px 12px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--border);
}

.daily-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 600;
}

.daily-time {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
}

/* ===== MODAL ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-primary);
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

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

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  display: flex;
  gap: 12px;
  padding: 24px;
  border-top: 1px solid var(--border);
  justify-content: flex-end;
}

/* ===== CHECKBOX ===== */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 500;
  user-select: none;
}

.checkbox-label input {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--primary);
}

/* ===== NOTIFICATIONS ===== */
.notification-toggle {
  display: flex;
  gap: 24px;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: 12px;
  margin-top: 24px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .sidebar {
    width: 180px;
    padding: 16px 12px;
  }

  .content-area {
    padding: 24px 32px;
  }

  .methods-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 768px) {
  .main-container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    max-height: none;
    padding: 12px 24px;
    border-right: none;
    border-bottom: 1px solid var(--border);
    position: static;
    overflow-x: auto;
  }

  .sidebar-nav {
    flex-direction: row;
    overflow-x: auto;
    gap: 4px;
  }

  .nav-item {
    white-space: nowrap;
  }

  .nav-text {
    display: none;
  }

  .content-area {
    padding: 16px 20px;
  }

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

  .notes-grid,
  .decks-grid,
  .goals-grid {
    grid-template-columns: 1fr;
  }

  .timer-display {
    width: 150px;
    height: 150px;
  }

  .timer-minutes,
  .timer-seconds {
    font-size: 2.2rem;
  }

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

  .modal-content {
    width: 95%;
  }

  .daily-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 480px) {
  .navbar {
    padding: 12px 16px;
  }

  .nav-brand {
    font-size: 1.2rem;
  }

  .content-area {
    padding: 12px 16px;
  }

  .glass-card {
    padding: 16px;
  }

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

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

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

  .stat-card {
    padding: 16px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

  .timer-settings {
    grid-template-columns: 1fr;
  }

  .daily-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .timeblock-item {
    flex-direction: column;
    align-items: flex-start;
  }
}