/* ==================== THEME SYSTEM - CSS VARIABLES ==================== */

/* Light Theme (Default) */
:root,
[data-theme="light"] {
  /* Primary Colors */
  --primary-color: #667eea;
  --primary-dark: #764ba2;
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

  /* Background Colors */
  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f0f2f5;
  --bg-card: #ffffff;
  --bg-sidebar: #ffffff;
  --bg-overlay: rgba(0, 0, 0, 0.5);

  /* Text Colors */
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --text-tertiary: #999999;
  --text-inverse: #ffffff;

  /* Border Colors */
  --border-color: #e0e0e0;
  --border-light: #f0f0f0;

  /* Shadow */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);

  /* Status Colors */
  --success-color: #4CAF50;
  --warning-color: #ff9800;
  --error-color: #f44336;
  --info-color: #2196F3;

  /* Chart Colors */
  --chart-bar: rgba(102, 126, 234, 0.8);
  --chart-line: #667eea;
}

/* Dark Theme */
[data-theme="dark"] {
  /* Primary Colors - Daha yumuşak tonlar */
  --primary-color: #8b9eff;
  --primary-dark: #a78bfa;
  --primary-gradient: linear-gradient(135deg, #4c5fd7 0%, #6b4c9a 100%);

  /* Background Colors */
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #252525;
  --bg-card: #1e1e1e;
  --bg-sidebar: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
  --bg-overlay: rgba(0, 0, 0, 0.8);

  /* Text Colors */
  --text-primary: #e8e8e8;
  --text-secondary: #a0a0a0;
  --text-tertiary: #707070;
  --text-inverse: #1a1a1a;

  /* Border Colors */
  --border-color: #333333;
  --border-light: #2a2a2a;

  /* Shadow - Daha yumuşak gölgeler */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);

  /* Status Colors - Biraz daha parlak */
  --success-color: #66bb6a;
  --warning-color: #ffb74d;
  --error-color: #ef5350;
  --info-color: #42a5f5;

  /* Chart Colors */
  --chart-bar: rgba(139, 158, 255, 0.8);
  --chart-line: #8b9eff;
}

/* ==================== GLOBAL THEME STYLES ==================== */

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* App Container */
.app-container {
  background: var(--bg-primary);
}

/* Sidebar */
.sidebar {
  background: var(--bg-sidebar);
}

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

[data-theme="dark"] .sidebar-btn {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

.sidebar-btn:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Main Content */
.main-content {
  background: var(--bg-primary);
}

/* Cards */
.card,
.program-card,
.feature-card,
.stat-card,
.chart-box,
.daily-log-summary,
.badge-item {
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
  color: var(--text-primary);
}

.card:hover,
.program-card:hover,
.feature-card:hover {
  box-shadow: var(--shadow-md);
}

/* Inputs */
input,
select,
textarea {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-tertiary);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

/* Buttons */
.btn-primary {
  background: var(--primary-gradient);
  color: white;
}

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

.btn-secondary:hover {
  background: var(--border-color);
}

/* Modals */
.modal-overlay {
  background: var(--bg-overlay);
}

.session-modal,
.log-modal,
.badge-modal,
.break-modal {
  background: var(--bg-card);
  color: var(--text-primary);
}

.modal-header {
  border-bottom-color: var(--border-color);
}

.modal-header h2 {
  color: var(--text-primary);
}

.modal-footer {
  border-top-color: var(--border-color);
}

/* Dashboard */
.program-dashboard {
  background: var(--bg-overlay);
}

.dashboard-container {
  background: var(--bg-card);
}

.dashboard-header {
  border-bottom-color: var(--border-color);
}

.dashboard-header h2 {
  color: var(--text-primary);
}

.tab-button {
  background: transparent;
  color: var(--text-secondary);
}

.tab-button.active {
  background: var(--primary-gradient);
  color: white;
}

.tab-content {
  background: var(--bg-primary);
}

/* Quick Actions */
.quick-actions-bar {
  background: var(--bg-card);
  border-color: var(--border-color);
}

.btn-action {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-action:hover {
  background: var(--border-color);
}

.btn-action.primary {
  background: var(--primary-gradient);
  color: white;
}

/* Search Box */
.search-box input {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

/* Filter Menu */
.filter-menu {
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: var(--shadow-lg);
}

/* Programs Container */
.programs-container {
  background: var(--bg-primary);
}

/* Stats */
.stats-grid .stat-card {
  background: var(--bg-card);
}

.stat-value {
  color: var(--primary-color);
}

.stat-label {
  color: var(--text-secondary);
}

/* Progress Bars */
.progress-bar-bg {
  background: var(--bg-tertiary);
}

.progress-fill {
  background: var(--primary-gradient);
}

/* Calendar */
.calendar-tab-content {
  background: var(--bg-primary);
}

.daily-calendar,
.monthly-calendar {
  background: var(--bg-card);
  border-color: var(--border-color);
}

.timeline-slot {
  border-bottom-color: var(--border-light);
}

.month-day {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.month-day.today {
  background: var(--primary-gradient);
  color: white;
}

/* Settings */
.settings-content {
  background: var(--bg-primary);
}

.setting-section {
  background: var(--bg-card);
  border-color: var(--border-color);
}

.setting-section h3 {
  color: var(--text-primary);
}

/* Timer */
.active-session-timer {
  background: var(--bg-card);
  border-color: var(--primary-color);
}

.timer-program {
  color: var(--text-primary);
}

.timer-topic {
  color: var(--text-secondary);
}

/* Badges */
.badge-gallery {
  background: var(--bg-primary);
}

.badge-category h4 {
  color: var(--text-primary);
}

.badge-item.earned {
  background: var(--bg-card);
  border-color: var(--primary-color);
}

.badge-item.locked {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
}

/* Daily Log */
.day-log {
  background: var(--bg-primary);
}

.day-header h3 {
  color: var(--text-primary);
}

.session-content {
  background: var(--bg-card);
  border-color: var(--border-color);
}

.session-program {
  color: var(--text-primary);
}

.session-topic {
  color: var(--text-secondary);
}

.programs-breakdown {
  background: var(--bg-tertiary);
}

/* Toasts */
.toast {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
}

/* Tooltips */
.tooltip {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

/* Wizard */
.wizard {
  background: var(--bg-card);
  color: var(--text-primary);
}

.subject-card,
.level-card,
.mode-card,
.template-card,
.bootcamp-card {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.subject-card.selected,
.level-card.selected,
.mode-card.selected {
  border-color: var(--primary-color);
  background: rgba(102, 126, 234, 0.1);
}

[data-theme="dark"] .subject-card.selected,
[data-theme="dark"] .level-card.selected,
[data-theme="dark"] .mode-card.selected {
  background: rgba(139, 158, 255, 0.15);
}

/* Today's Tasks Widget */
.todays-tasks-widget {
  background: var(--bg-card);
  border-color: var(--border-color);
}

.todays-tasks-widget h3 {
  color: var(--text-primary);
}

/* Scrollbar */
[data-theme="dark"] ::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* Theme Toggle Button */
.theme-toggle-btn {
  margin-top: auto;
}

/* Smooth Transitions - Sadece belirli elementlere uygula (performans icin) */
.sidebar,
.sidebar-btn,
.card,
.program-card,
.btn-primary,
.btn-secondary,
.btn-action,
.tab-button,
.modal-overlay,
.dashboard-container {
  transition: background-color 0.3s ease,
              border-color 0.3s ease,
              box-shadow 0.3s ease;
}

/* Disable transitions on page load */
.no-transition * {
  transition: none !important;
}

/* ==================== MOTIVATIONAL QUOTES FOOTER ==================== */

.app-footer {
  padding: 16px 24px;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.footer-content {
  max-width: 800px;
  margin: 0 auto;
}

.motivational-quote {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.quote-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.quote-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.quote-text {
  margin: 0;
  font-size: 14px;
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.5;
}

.quote-author {
  font-size: 12px;
  color: var(--text-tertiary);
  white-space: nowrap;
}

.quote-refresh {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: all 0.3s ease;
  opacity: 0.6;
}

.quote-refresh:hover {
  opacity: 1;
  background: var(--bg-tertiary);
  transform: rotate(180deg);
}

@media (max-width: 768px) {
  .motivational-quote {
    flex-direction: column;
    text-align: center;
  }

  .quote-content {
    flex-direction: column;
  }

  .quote-author {
    margin-top: 8px;
  }
}

/* ==================== LOADING SPINNER ==================== */

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-text {
  color: var(--text-inverse);
  margin-top: 16px;
  font-size: 16px;
  font-weight: 500;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

/* ==================== MOTIVATION POPUP ==================== */

.motivation-popup {
  position: fixed;
  z-index: 99999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-20px);
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  pointer-events: none;
}

.motivation-popup.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.motivation-popup.top-left {
  top: 20px;
  left: 300px;
}

.motivation-popup.top-right {
  top: 20px;
  right: 20px;
}

.motivation-popup .popup-content {
  background: var(--bg-card);
  border: 2px solid var(--primary-color);
  border-radius: 16px;
  padding: 20px 24px;
  box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
  max-width: 380px;
  position: relative;
  animation: popupBounce 0.5s ease;
}

@keyframes popupBounce {
  0% { transform: scale(0.8); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.motivation-popup .popup-close {
  position: absolute;
  top: 8px;
  right: 12px;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all 0.3s ease;
  line-height: 1;
}

.motivation-popup .popup-close:hover {
  color: var(--error-color);
  transform: scale(1.2);
}

.motivation-popup .popup-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.motivation-popup .popup-text {
  font-size: 15px;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.6;
  margin: 0 0 12px 0;
}

.motivation-popup .popup-author {
  display: block;
  font-size: 13px;
  color: var(--primary-color);
  font-weight: 600;
}

/* Dark mode için popup ayarları */
[data-theme="dark"] .motivation-popup .popup-content {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* Mobil için popup pozisyonu */
@media (max-width: 768px) {
  .motivation-popup.top-left,
  .motivation-popup.top-right {
    left: 16px;
    right: 16px;
    top: 16px;
  }

  .motivation-popup .popup-content {
    max-width: 100%;
  }
}

/* ==================== DARK MODE - LIFE MANAGER FIX ==================== */

/* Dark mode sidebar */
[data-theme="dark"] .sidebar {
  background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
}

/* Dark mode navigasyon butonları */
[data-theme="dark"] .nav-item {
  color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .nav-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

[data-theme="dark"] .nav-item.active {
  background: var(--primary-color);
  color: white;
}

/* Dark mode today summary widget */
[data-theme="dark"] .today-summary-widget {
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .today-summary-widget h4 {
  color: rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .mini-task-item {
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .mini-task-empty {
  color: rgba(255, 255, 255, 0.4);
}

/* Dark mode hamburger menu */
[data-theme="dark"] .hamburger-menu-btn {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] .hamburger-menu-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .hamburger-menu {
  background: #1e1e2e;
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .hamburger-menu .menu-item {
  color: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] .hamburger-menu .menu-item:hover {
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .hamburger-menu .menu-divider {
  background: rgba(255, 255, 255, 0.1);
}

/* Dark mode sidebar footer */
[data-theme="dark"] .sidebar-footer .status {
  color: rgba(255, 255, 255, 0.5);
}

/* Dark mode home dashboard */
[data-theme="dark"] .home-dashboard {
  background: var(--bg-primary);
}

[data-theme="dark"] .greeting h1 {
  color: var(--text-primary);
}

[data-theme="dark"] .greeting p {
  color: var(--text-secondary);
}

/* Dark mode summary cards */
[data-theme="dark"] .summary-card {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .summary-card:hover {
  border-color: var(--primary-color);
}

/* Dark mode section headers */
[data-theme="dark"] .section-header h3 {
  color: var(--text-primary);
}

[data-theme="dark"] .btn-see-all {
  color: var(--primary-color);
}

/* Dark mode empty states */
[data-theme="dark"] .empty-state {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .empty-state p {
  color: var(--text-secondary);
}

/* Dark mode home task items */
[data-theme="dark"] .home-task-item {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .home-task-item:hover {
  background: var(--bg-tertiary);
}

/* Dark mode quick add menu */
[data-theme="dark"] .quick-add-menu {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .quick-add-item {
  color: var(--text-primary);
}

[data-theme="dark"] .quick-add-item:hover {
  background: var(--bg-tertiary);
}

/* Dark mode TODO styles */
[data-theme="dark"] .todo-item {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .todo-item:hover {
  background: var(--bg-tertiary);
}

[data-theme="dark"] .todo-modal {
  background: var(--bg-card);
}

[data-theme="dark"] .todo-modal-header {
  border-bottom-color: var(--border-color);
}

[data-theme="dark"] .todo-modal-footer {
  background: var(--bg-tertiary);
  border-top-color: var(--border-color);
}

/* Dark mode form elements */
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .form-group textarea {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .btn-add-reminder {
  background: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

/* Dark mode logo text */
[data-theme="dark"] .logo-text h2 {
  color: #ffffff;
}

[data-theme="dark"] .logo-text span {
  color: rgba(255, 255, 255, 0.6);
}

/* Dark mode content area */
[data-theme="dark"] .content-area {
  background: var(--bg-primary);
}