/* ============================================
   Quran Learning Website - Main Stylesheet
   RTL Arabic Design for Elderly Users
   ============================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Amiri:wght@400;700&family=Amiri+Quran&display=swap');

/* ---------- CSS Variables ---------- */
:root {
  --clr-bg: #f0f7f0;
  --clr-bg-card: #ffffff;
  --clr-primary: #2e7d32;
  --clr-primary-light: #4caf50;
  --clr-primary-dark: #1b5e20;
  --clr-accent: #c8e6c9;
  --clr-accent-dark: #a5d6a7;
  --clr-gold: #f9a825;
  --clr-gold-light: #fff9c4;
  --clr-text: #1a1a1a;
  --clr-text-muted: #555555;
  --clr-white: #ffffff;
  --clr-shadow: rgba(0,0,0,0.08);
  --clr-shadow-md: rgba(0,0,0,0.12);
  --clr-highlight: #fff176;
  --clr-highlight-glow: rgba(255,241,118,0.6);
  --clr-border: #e0e0e0;
  --clr-danger: #c62828;

  --font-quran: 'Amiri Quran', 'Amiri', serif;
  --font-ui: 'Amiri', serif;

  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-full: 50%;

  --shadow-sm: 0 2px 8px var(--clr-shadow);
  --shadow-md: 0 4px 16px var(--clr-shadow-md);
  --shadow-lg: 0 8px 32px var(--clr-shadow-md);

  --transition: all 0.3s ease;
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  direction: rtl;
  text-align: right;
  font-family: var(--font-ui);
  background: var(--clr-bg);
  color: var(--clr-text);
  min-height: 100vh;
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  font-family: var(--font-ui);
  border: none;
  cursor: pointer;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

img, svg {
  display: block;
  max-width: 100%;
}

/* ---------- Header ---------- */
.site-header {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  color: var(--clr-white);
  padding: 20px 24px;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.site-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.site-header .subtitle {
  font-size: 1rem;
  opacity: 0.85;
  margin-top: 4px;
}

/* ---------- Back Button ---------- */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.15);
  color: var(--clr-white);
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  font-size: 1.2rem;
  font-weight: 700;
  transition: var(--transition);
  margin-bottom: 8px;
}

.back-btn:hover,
.back-btn:active {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.5);
  transform: scale(1.03);
}

.back-btn .arrow {
  font-size: 1.6rem;
  line-height: 1;
}

/* ---------- Main Container ---------- */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 24px 16px 100px;
}

/* ---------- Home Page Cards ---------- */
.home-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 16px;
}

.home-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--clr-bg-card);
  border-radius: var(--radius-lg);
  padding: 40px 24px 36px;
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 3px solid transparent;
  cursor: pointer;
  min-height: 200px;
  position: relative;
  overflow: hidden;
}

.home-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-primary-light));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.home-card:hover,
.home-card:active {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--clr-accent-dark);
}

.home-card .card-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.home-card .card-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.home-card .card-icon .icon-text {
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--clr-primary);
  line-height: 1;
}

.home-card .card-label {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--clr-primary-dark);
  line-height: 1.4;
}

/* ---------- Section Title ---------- */
.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--clr-primary-dark);
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--clr-accent);
}

/* ---------- Letters Section ---------- */
.letter-display {
  background: var(--clr-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 48px 24px 40px;
  text-align: center;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.letter-display::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--clr-gold), var(--clr-primary-light));
}

.letter-char {
  font-family: var(--font-quran);
  font-size: 8rem;
  color: var(--clr-primary-dark);
  cursor: pointer;
  transition: var(--transition);
  display: inline-block;
  padding: 16px 32px;
  border-radius: var(--radius-md);
  user-select: none;
  line-height: 1.2;
}

.letter-char:hover,
.letter-char:active {
  color: var(--clr-primary);
  background: var(--clr-accent);
  transform: scale(1.1);
}

.letter-char.playing {
  color: var(--clr-gold);
  animation: pulse 0.8s ease infinite;
}

.letter-name {
  font-size: 2rem;
  color: var(--clr-text-muted);
  margin-top: 12px;
  font-weight: 700;
}

.letter-hint {
  font-size: 1.1rem;
  color: var(--clr-primary);
  margin-top: 16px;
  opacity: 0.8;
}

.letter-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
}

.letter-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--radius-md);
  padding: 18px 40px;
  font-size: 1.4rem;
  font-weight: 700;
  transition: var(--transition);
  min-width: 140px;
  box-shadow: var(--shadow-sm);
}

.letter-nav-btn:hover,
.letter-nav-btn:active {
  background: var(--clr-primary-dark);
  transform: scale(1.03);
}

.letter-nav-btn:disabled {
  background: var(--clr-border);
  color: var(--clr-text-muted);
  cursor: not-allowed;
  transform: none;
}

.letter-counter {
  text-align: center;
  font-size: 1.2rem;
  color: var(--clr-text-muted);
  margin-top: 20px;
}

.letter-progress {
  width: 100%;
  height: 8px;
  background: var(--clr-accent);
  border-radius: 4px;
  margin-top: 12px;
  overflow: hidden;
}

.letter-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-primary-light));
  border-radius: 4px;
  transition: width 0.5s ease;
}

/* ---------- Surah List ---------- */
.surah-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.surah-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--clr-bg-card);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}

.surah-card:hover,
.surah-card:active {
  box-shadow: var(--shadow-md);
  border-color: var(--clr-accent-dark);
  transform: translateX(-4px);
}

.surah-card.active {
  border-color: var(--clr-primary);
  background: linear-gradient(135deg, #f1f8e9, var(--clr-bg-card));
}

.surah-number {
  width: 56px;
  height: 56px;
  min-width: 56px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
  color: var(--clr-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.surah-info {
  flex: 1;
}

.surah-name {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--clr-primary-dark);
  line-height: 1.4;
}

.surah-meta {
  font-size: 1rem;
  color: var(--clr-text-muted);
  margin-top: 2px;
}

.surah-play-btn {
  width: 64px;
  height: 64px;
  min-width: 64px;
  background: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.surah-play-btn:hover,
.surah-play-btn:active {
  background: var(--clr-primary-dark);
  transform: scale(1.1);
}

.surah-play-btn.playing {
  background: var(--clr-danger);
  animation: pulse 1.5s ease infinite;
}

/* ---------- Surah Detail / Memorization ---------- */
.surah-detail {
  background: var(--clr-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 32px 24px;
  margin-bottom: 24px;
}

.surah-detail-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-primary-dark);
  text-align: center;
  margin-bottom: 8px;
}

.bismillah {
  font-family: var(--font-quran);
  font-size: 1.8rem;
  color: var(--clr-primary);
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--clr-accent);
}

.verses-container {
  font-family: var(--font-quran);
  font-size: 2.2rem;
  line-height: 2.8;
  text-align: center;
  color: var(--clr-text);
  padding: 16px 0;
  word-spacing: 8px;
}

.verse-word {
  display: inline;
  padding: 4px 6px;
  border-radius: 6px;
  transition: background 0.3s ease, color 0.3s ease;
  cursor: default;
}

.verse-word.highlighted {
  background: var(--clr-highlight);
  box-shadow: 0 0 12px var(--clr-highlight-glow);
  border-radius: 8px;
}

.verse-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--clr-accent);
  color: var(--clr-primary-dark);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0 4px;
  vertical-align: middle;
  font-family: var(--font-ui);
}

/* ---------- Audio Controls ---------- */
.audio-controls {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.audio-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--radius-md);
  padding: 18px 36px;
  font-size: 1.3rem;
  font-weight: 700;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  min-width: 150px;
}

.audio-btn:hover,
.audio-btn:active {
  background: var(--clr-primary-dark);
  transform: scale(1.03);
}

.audio-btn.stop-btn {
  background: var(--clr-danger);
}

.audio-btn.stop-btn:hover,
.audio-btn.stop-btn:active {
  background: #b71c1c;
}

.audio-btn.repeat-btn {
  background: var(--clr-gold);
  color: var(--clr-text);
}

.audio-btn.repeat-btn:hover,
.audio-btn.repeat-btn:active {
  background: #f57f17;
  color: var(--clr-white);
}

.audio-btn .btn-icon {
  font-size: 1.6rem;
  line-height: 1;
}

/* ---------- Now Playing Bar ---------- */
.now-playing {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  color: var(--clr-white);
  padding: 16px 24px;
  display: none;
  align-items: center;
  gap: 16px;
  z-index: 200;
  box-shadow: 0 -4px 16px var(--clr-shadow-md);
}

.now-playing.visible {
  display: flex;
}

.now-playing .np-info {
  flex: 1;
  font-size: 1.2rem;
  font-weight: 700;
}

.now-playing .np-btn {
  width: 52px;
  height: 52px;
  min-width: 52px;
  background: rgba(255,255,255,0.2);
  color: var(--clr-white);
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  transition: var(--transition);
}

.now-playing .np-btn:hover,
.now-playing .np-btn:active {
  background: rgba(255,255,255,0.35);
}

/* ---------- Animations ---------- */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

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

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* ---------- Tap Instruction ---------- */
.tap-instruction {
  text-align: center;
  font-size: 1.1rem;
  color: var(--clr-primary);
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.tap-instruction .hand-icon {
  font-size: 1.6rem;
  animation: tapBounce 1.5s ease infinite;
}

@keyframes tapBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ---------- Loading ---------- */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  flex-direction: column;
  gap: 16px;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 5px solid var(--clr-accent);
  border-top-color: var(--clr-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  padding: 24px 16px;
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  border-top: 2px solid var(--clr-accent);
  margin-top: 40px;
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  html {
    font-size: 16px;
  }

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

  .container {
    padding: 16px 12px 100px;
  }

  .home-card {
    padding: 32px 16px 28px;
    min-height: 160px;
  }

  .home-card .card-icon {
    width: 80px;
    height: 80px;
  }

  .home-card .card-label {
    font-size: 1.5rem;
  }

  .letter-char {
    font-size: 6rem;
  }

  .letter-nav-btn {
    padding: 14px 28px;
    font-size: 1.2rem;
  }

  .verses-container {
    font-size: 1.8rem;
    line-height: 2.4;
  }

  .audio-btn {
    padding: 14px 24px;
    font-size: 1.1rem;
  }
}

@media (min-width: 768px) {
  .home-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .home-card {
    padding: 48px 32px 44px;
  }
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--clr-accent-dark);
  border-radius: 4px;
}

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

/* ---------- Selection ---------- */
::selection {
  background: var(--clr-accent);
  color: var(--clr-primary-dark);
}