/* ══════════════════════════════════════
   Daily Phrase – Global Styles
   ══════════════════════════════════════ */

/* ─── CSS Variables (Dark/Light) ─── */
:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #12122a;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --accent: #4fc3f7;
  --accent-glow: rgba(79, 195, 247, 0.15);
  --accent-green: #66bb6a;
  --accent-yellow: #ffd54f;
  --accent-red: #ef5350;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(79, 195, 247, 0.3);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --radius: 16px;
  --radius-sm: 10px;
  --font-ar: 'Tajawal', 'Segoe UI', sans-serif;
  --font-en: 'Inter', 'Segoe UI', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f5f5fa;
  --bg-secondary: #ffffff;
  --bg-card: rgba(0, 0, 0, 0.03);
  --bg-card-hover: rgba(0, 0, 0, 0.06);
  --text-primary: #1a1a2e;
  --text-secondary: #5a5a7a;
  --accent: #1976d2;
  --accent-glow: rgba(25, 118, 210, 0.1);
  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(25, 118, 210, 0.3);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-ar);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

/* ─── Background Animation ─── */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle at 20% 50%,
    rgba(79, 195, 247, 0.03) 0%,
    transparent 50%
  ),
  radial-gradient(
    circle at 80% 20%,
    rgba(102, 187, 106, 0.02) 0%,
    transparent 50%
  );
  z-index: -1;
  animation: bgFloat 20s ease-in-out infinite;
}

@keyframes bgFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-2%, 2%); }
}

[data-theme="light"] body::before {
  background: radial-gradient(
    circle at 20% 50%,
    rgba(25, 118, 210, 0.05) 0%,
    transparent 50%
  );
}

/* ─── Container ─── */
.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 16px;
}

/* ─── Header / Navbar ─── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.3em;
}

.navbar-brand .logo-icon {
  font-size: 1.5em;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ─── Theme Toggle ─── */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 8px 12px;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 1.1em;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.theme-toggle:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

/* ─── Progress Bar (Index Page) ─── */
.progress-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}

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

.progress-title {
  font-size: 1em;
  color: var(--text-secondary);
}

.progress-count {
  font-size: 1.1em;
  font-weight: 700;
  color: var(--accent);
}

.progress-bar-bg {
  width: 100%;
  height: 8px;
  background: var(--border);
  border-radius: 50px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-green));
  border-radius: 50px;
  transition: width 0.8s ease;
  width: 0%;
}

.streak-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding: 6px 14px;
  background: rgba(255, 213, 79, 0.1);
  border: 1px solid rgba(255, 213, 79, 0.2);
  border-radius: 50px;
  font-size: 0.9em;
  color: var(--accent-yellow);
}

/* ─── Search Bar ─── */
.search-box {
  position: relative;
  margin-bottom: 20px;
}

.search-box input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 1em;
  font-family: var(--font-ar);
  outline: none;
  transition: all var(--transition);
}

.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-box input::placeholder {
  color: var(--text-secondary);
}

.search-box .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 1.1em;
}

/* ─── Lesson List (Index) ─── */
.lessons-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lesson-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition);
}

.lesson-item a:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.lesson-item .lesson-date {
  font-weight: 600;
  color: var(--accent);
  direction: ltr;
}

.lesson-item .lesson-preview {
  color: var(--text-secondary);
  font-size: 0.9em;
}

.lesson-item .check-icon {
  color: var(--accent-green);
  font-size: 1.2em;
  opacity: 0;
  transition: opacity var(--transition);
}

.lesson-item.visited .check-icon {
  opacity: 1;
}

/* ─── Ad Container ─── */
.ad-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px;
  margin: 20px 0;
  text-align: center;
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-label {
  font-size: 0.7em;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

/* ═══════════════════════════════════════
   LESSON PAGE STYLES
   ═══════════════════════════════════════ */

/* ─── Hero Section ─── */
.lesson-hero {
  text-align: center;
  padding: 40px 0 30px;
}

.lesson-date-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-glow);
  border: 1px solid var(--border-hover);
  border-radius: 50px;
  font-size: 0.85em;
  color: var(--accent);
  margin-bottom: 16px;
}

.lesson-phrase {
  font-family: var(--font-en);
  font-size: 2.4em;
  font-weight: 800;
  color: var(--accent);
  direction: ltr;
  line-height: 1.3;
  letter-spacing: -0.5px;
}

.lesson-pronunciation {
  font-family: var(--font-en);
  color: var(--text-secondary);
  font-style: italic;
  font-size: 1.05em;
  margin: 8px 0;
  direction: ltr;
}

.lesson-phrase-ar {
  font-size: 1.4em;
  color: var(--text-primary);
  margin-top: 10px;
}

/* ─── Sound Button ─── */
.sound-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  margin-top: 16px;
  background: linear-gradient(135deg, var(--accent), #29b6f6);
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 15px rgba(79, 195, 247, 0.3);
}

.sound-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(79, 195, 247, 0.4);
}

.sound-btn:active {
  transform: scale(0.97);
}

.sound-btn.playing {
  animation: soundPulse 0.8s ease infinite;
}

@keyframes soundPulse {
  0%, 100% { box-shadow: 0 4px 15px rgba(79, 195, 247, 0.3); }
  50% { box-shadow: 0 4px 25px rgba(79, 195, 247, 0.6); }
}

/* ─── Section Cards ─── */
.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  backdrop-filter: blur(10px);
  transition: all var(--transition);
}

.section-card:hover {
  border-color: var(--border-hover);
}

.section-icon {
  font-size: 1.5em;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 1.15em;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-body {
  color: var(--text-secondary);
  font-size: 1.02em;
  line-height: 1.8;
}

/* ─── Usage Examples ─── */
.usage-item {
  padding: 12px 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  direction: ltr;
  text-align: left;
  font-family: var(--font-en);
  color: var(--text-primary);
  border-left: 3px solid var(--accent);
  transition: all var(--transition);
}

.usage-item:hover {
  background: var(--bg-card-hover);
  transform: translateX(-4px);
}

/* ─── Vocabulary Cards ─── */
.vocab-grid {
  display: grid;
  gap: 12px;
}

.vocab-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.vocab-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.vocab-word-text {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 1.1em;
  color: var(--accent);
  direction: ltr;
}

.vocab-meaning {
  color: var(--text-secondary);
  font-size: 0.95em;
}

.vocab-example {
  color: var(--text-secondary);
  font-size: 0.88em;
  font-style: italic;
  direction: ltr;
  text-align: left;
  margin-top: 4px;
}

.vocab-sound-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1em;
  flex-shrink: 0;
  transition: all var(--transition);
}

.vocab-sound-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ─── Joke Box ─── */
.joke-card {
  border-color: rgba(255, 213, 79, 0.2);
  background: rgba(255, 213, 79, 0.04);
}

.joke-en {
  font-family: var(--font-en);
  direction: ltr;
  text-align: left;
  font-style: italic;
  color: var(--text-primary);
  font-size: 1.05em;
}

.joke-ar {
  margin-top: 10px;
  color: var(--text-secondary);
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

/* ─── Grammar Tip ─── */
.grammar-card {
  border-color: rgba(102, 187, 106, 0.2);
  background: rgba(102, 187, 106, 0.04);
}

/* ─── Quiz Section ─── */
.quiz-card {
  border-color: rgba(171, 71, 188, 0.2);
  background: rgba(171, 71, 188, 0.04);
}

.quiz-question {
  font-size: 1.05em;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-option {
  padding: 12px 18px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-ar);
  font-size: 1em;
  text-align: right;
  color: var(--text-primary);
}

.quiz-option:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.quiz-option.correct {
  border-color: var(--accent-green);
  background: rgba(102, 187, 106, 0.15);
  color: var(--accent-green);
}

.quiz-option.wrong {
  border-color: var(--accent-red);
  background: rgba(239, 83, 80, 0.1);
  color: var(--accent-red);
}

.quiz-option:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.quiz-result {
  margin-top: 12px;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-align: center;
  display: none;
}

.quiz-result.show {
  display: block;
}

.quiz-result.success {
  background: rgba(102, 187, 106, 0.1);
  color: var(--accent-green);
}

.quiz-result.fail {
  background: rgba(239, 83, 80, 0.1);
  color: var(--accent-red);
}

.quiz-score {
  text-align: center;
  margin-top: 16px;
  font-size: 1.2em;
  font-weight: 700;
  color: var(--accent);
  display: none;
}

.quiz-score.show {
  display: block;
}

/* ─── Share Buttons ─── */
.share-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px 0;
  flex-wrap: wrap;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 50px;
  text-decoration: none;
  font-size: 0.9em;
  font-weight: 600;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
  font-family: var(--font-ar);
}

.share-btn.whatsapp {
  background: rgba(37, 211, 102, 0.1);
  color: #25d366;
  border: 1px solid rgba(37, 211, 102, 0.2);
}

.share-btn.twitter {
  background: rgba(29, 161, 242, 0.1);
  color: #1da1f2;
  border: 1px solid rgba(29, 161, 242, 0.2);
}

.share-btn.telegram {
  background: rgba(0, 136, 204, 0.1);
  color: #0088cc;
  border: 1px solid rgba(0, 136, 204, 0.2);
}

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

.share-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* ─── Back to Archive Link ─── */
.nav-back {
  text-align: center;
  padding: 30px 0;
}

.nav-back a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 50px;
  transition: all var(--transition);
  font-weight: 600;
}

.nav-back a:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ─── Footer ─── */
.footer {
  text-align: center;
  padding: 30px 0 20px;
  color: var(--text-secondary);
  font-size: 0.85em;
  border-top: 1px solid var(--border);
  margin-top: 30px;
}

/* ─── Responsive ─── */
@media (max-width: 600px) {
  .lesson-phrase {
    font-size: 1.7em;
  }

  .section-card {
    padding: 18px;
  }

  .container {
    padding: 12px;
  }

  .navbar-brand {
    font-size: 1.1em;
  }

  .share-section {
    gap: 6px;
  }

  .share-btn {
    padding: 8px 12px;
    font-size: 0.82em;
  }
}

/* ─── Animations ─── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

.fade-in:nth-child(2) { animation-delay: 0.1s; }
.fade-in:nth-child(3) { animation-delay: 0.2s; }
.fade-in:nth-child(4) { animation-delay: 0.3s; }
.fade-in:nth-child(5) { animation-delay: 0.4s; }
.fade-in:nth-child(6) { animation-delay: 0.5s; }
.fade-in:nth-child(7) { animation-delay: 0.6s; }

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

/* ─── Install Banner ─── */
.install-banner {
  display: none;
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 8px 30px rgba(79, 195, 247, 0.4);
  z-index: 1000;
  font-family: var(--font-ar);
  animation: slideUp 0.5s ease;
}

.install-banner.show {
  display: block;
}

@keyframes slideUp {
  from { transform: translateX(-50%) translateY(100px); }
  to { transform: translateX(-50%) translateY(0); }
}