/* ============================================
   نادي بهجة - Animations & Special Effects
   ✨ Cheerful & Joyful Micro-Interactions
   ============================================ */

/* ---------- Page Transitions ---------- */
.page-enter {
  animation: pageEnter 0.4s ease-out;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Staggered Animations ---------- */
.stagger-item {
  opacity: 0;
  animation: staggerIn 0.5s ease-out forwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.05s; }
.stagger-item:nth-child(2) { animation-delay: 0.1s; }
.stagger-item:nth-child(3) { animation-delay: 0.15s; }
.stagger-item:nth-child(4) { animation-delay: 0.2s; }
.stagger-item:nth-child(5) { animation-delay: 0.25s; }
.stagger-item:nth-child(6) { animation-delay: 0.3s; }
.stagger-item:nth-child(7) { animation-delay: 0.35s; }
.stagger-item:nth-child(8) { animation-delay: 0.4s; }
.stagger-item:nth-child(9) { animation-delay: 0.45s; }
.stagger-item:nth-child(10) { animation-delay: 0.5s; }

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

/* ---------- Progress Bar Animation ---------- */
.progress-animate .progress-fill {
  animation: progressGrow 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes progressGrow {
  from { width: 0 !important; }
}

/* ---------- Hover Effects ---------- */
.card[onclick]:active,
.card.card-interactive:active,
a.card:active,
.subject-card:active {
  transform: scale(0.98);
}

/* ---------- Navigation Animations ---------- */
.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  position: relative;
  text-decoration: none;
}

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

.nav-item.active {
  color: var(--primary);
  background: var(--primary-bg);
  font-weight: var(--font-weight-semibold);
}

.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 20%;
  right: 20%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: var(--radius-full);
}

.nav-label {
  font-size: var(--font-size-xs);
}

/* ---------- Header Styles ---------- */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

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

.user-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-primary);
}

.user-btn:hover {
  background: var(--primary-bg);
  color: var(--primary);
}

/* ---------- Login Page Special Effects ---------- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.login-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg,
      rgba(74, 173, 219, 0.08) 0%,
      rgba(247, 148, 29, 0.06) 40%,
      rgba(46, 204, 113, 0.05) 60%,
      rgba(255, 107, 157, 0.04) 100%
    );
  z-index: 0;
}

/* Decorative circles for login page */
.login-bg::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(247, 148, 29, 0.12) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  animation: float 6s ease-in-out infinite;
}

.login-bg::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 173, 219, 0.12) 0%, transparent 70%);
  bottom: -80px;
  left: -80px;
  animation: float 8s ease-in-out infinite reverse;
}

.login-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  padding: var(--space-lg);
}

.login-card {
  border: 2px solid rgba(247, 148, 29, 0.1);
}

.login-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.login-logo {
  font-size: 4rem;
  margin-bottom: var(--space-md);
  filter: drop-shadow(0 4px 12px rgba(247, 148, 29, 0.3));
}

.login-header h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-xs);
}

.login-header p {
  color: var(--text-secondary);
}

/* ---------- Video Player Special ---------- */
.video-player-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.video-player-container video {
  width: 100%;
  display: block;
}

.video-controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: linear-gradient(180deg, transparent, rgba(0,0,0,0.7));
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
}

.video-progress {
  flex: 1;
  height: 6px;
  background: rgba(255,255,255,0.3);
  border-radius: var(--radius-full);
  cursor: pointer;
  overflow: hidden;
}

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

.video-lock-indicator {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  background: rgba(231, 76, 60, 0.9);
  color: white;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* ---------- Quiz Animations ---------- */
.quiz-option {
  padding: var(--space-md);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--bg-card);
}

.quiz-option:hover {
  border-color: var(--primary-light);
  background: var(--primary-bg);
  transform: translateX(-4px);
}

.quiz-option.selected {
  border-color: var(--primary);
  background: var(--primary-bg);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.quiz-option.correct {
  border-color: var(--success);
  background: var(--success-bg);
}

.quiz-option.incorrect {
  border-color: var(--danger);
  background: var(--danger-bg);
}

.quiz-option-label {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  flex-shrink: 0;
  border: 2px solid var(--border-default);
  transition: all var(--transition-fast);
}

.quiz-option.selected .quiz-option-label {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.quiz-option.correct .quiz-option-label {
  background: var(--success);
  color: white;
  border-color: var(--success);
}

.quiz-option.incorrect .quiz-option-label {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}

.quiz-result {
  text-align: center;
  padding: var(--space-2xl);
  background: linear-gradient(135deg, var(--primary-bg), var(--accent-bg));
  border-radius: var(--radius-xl);
  border: 2px solid rgba(247, 148, 29, 0.15);
}

.quiz-score {
  font-size: 3.5rem;
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Sync / USB Animations ---------- */
.sync-progress {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 4px solid var(--border-subtle);
  border-top-color: var(--primary);
  border-right-color: var(--accent);
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

.sync-status {
  text-align: center;
  padding: var(--space-xl);
}

/* ---------- Particle Effects (Login) ---------- */
.particle {
  position: fixed;
  pointer-events: none;
  z-index: 0;
  border-radius: 50%;
  animation: particleFloat 15s ease-in-out infinite;
  opacity: 0.4;
}

@keyframes particleFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-30px) rotate(90deg); }
  50% { transform: translateY(-10px) rotate(180deg); }
  75% { transform: translateY(-40px) rotate(270deg); }
}

/* ---------- Motivational Phrase ---------- */
.motivational-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  animation: fadeIn 0.5s ease;
}

.motivational-content {
  text-align: center;
  max-width: 500px;
  padding: var(--space-2xl);
  animation: bounceIn 0.8s var(--ease-spring);
}

.motivational-icon {
  font-size: 4rem;
  margin-bottom: var(--space-lg);
  animation: bounce 1s ease infinite alternate;
}

.motivational-text {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-md);
}

.motivational-author {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  font-style: italic;
}

/* ---------- Responsive Nav ---------- */
@media (max-width: 768px) {
  .header-nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .header-nav::-webkit-scrollbar {
    display: none;
  }

  .nav-item {
    padding: 6px 10px;
    flex-direction: column;
    gap: 2px;
    font-size: 1.2rem;
  }

  .nav-item.active::after {
    display: none;
  }

  .login-bg::before,
  .login-bg::after {
    display: none;
  }
}

/* ---------- Print Styles ---------- */
@media print {
  .app-header,
  .header-nav,
  .btn,
  .toast-container {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .card {
    border: 1px solid #ccc;
    box-shadow: none;
  }
}

/* ---------- Ripple Effect Style ---------- */
.ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: var(--primary-glow);
  pointer-events: none;
  transform: scale(0);
  animation: ripple-animation 0.6s ease-out;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}