:root {
  /* Apple Music Color Palette */
  --bg-main: #000000;
  --bg-secondary: #0a0a0a;
  --bg-elevated: #1a1a1a;
  --bg-glass: rgba(26, 26, 26, 0.72);

  --primary: #fa233b;
  --primary-hover: #ff3b4f;
  --accent: #ff375f;

  --text-primary: #ffffff;
  --text-secondary: #a1a1a6;
  --text-tertiary: #636366;

  --border-color: rgba(255, 255, 255, 0.08);
  --divider: rgba(255, 255, 255, 0.12);

  --font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Menlo', 'Consolas', 'Courier New', monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.24);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.32);
}

/* RTL Font Override */
[dir="rtl"] {
  --font-display: 'Vazirmatn', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Vazirmatn', -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Page Transition Animations */
body.page-transitioning {
  opacity: 0.7;
  pointer-events: none;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Glass Effect - Apple Style */
.glass {
  background: var(--bg-glass);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.glass-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 255, 255, 0.16);
}

/* Header - Apple Music Style */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

header.scrolled {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-display);
  color: var(--text-primary);
  white-space: nowrap;
}

.logo span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

/* RTL Navigation */
[dir="rtl"] .nav-links a.active::after {
  right: 0;
  left: 0;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switcher select {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  outline: none;
}

.lang-switcher select:hover {
  border-color: var(--text-tertiary);
}

.lang-switcher select:focus {
  border-color: var(--primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 4px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

/* Hero Section - Apple Music Style */
.hero {
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(250, 35, 59, 0.15) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: 24px;
  font-weight: 800;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.5;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons - Apple Music Style */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 980px;
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(250, 35, 59, 0.3);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: scale(1.02);
  box-shadow: 0 6px 20px rgba(250, 35, 59, 0.4);
}

.btn-primary:active {
  transform: scale(0.98);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.16);
}

/* Stats Grid */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-top: 80px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.stat-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  padding: 24px 16px;
  border-radius: var(--radius-md);
  text-align: center;
  transition: all 0.3s;
}

.stat-card:hover {
  border-color: rgba(255, 255, 255, 0.16);
  transform: translateY(-2px);
}

.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
  font-family: var(--font-display);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: 16px;
  font-weight: 800;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Grid Layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-item {
  padding: 32px;
  text-align: center;
}

.feature-item h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.feature-item p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: block;
}

/* Terminal Block - Apple Music Style */
.terminal-block {
  margin: 80px auto;
  max-width: 900px;
}

.terminal-window {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.terminal-header {
  background: rgba(255, 255, 255, 0.03);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  gap: 16px;
}

.terminal-buttons {
  display: flex;
  gap: 8px;
}

.terminal-buttons span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.t-red {
  background: #ff5f56;
}

.t-yellow {
  background: #ffbd2e;
}

.t-green {
  background: #27c93f;
}

.terminal-tabs {
  display: flex;
  gap: 16px;
}

.t-tab {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.875rem;
  padding: 6px 12px;
  font-weight: 500;
  transition: all 0.2s;
  border-radius: var(--radius-sm);
}

.t-tab:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

.t-tab.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.terminal-content {
  padding: 32px;
  color: var(--text-secondary);
  position: relative;
  min-height: 100px;
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.t-prompt {
  color: var(--primary);
  margin-inline-end: 12px;
  user-select: none;
  font-weight: 600;
}

.t-cmd {
  color: var(--text-primary);
  word-break: break-all;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.t-copy-btn {
  position: absolute;
  inset-inline-end: 24px;
  top: 24px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 20px;
  border-radius: 980px;
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s;
  font-family: var(--font-body);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.t-copy-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: scale(1.02);
}

.t-copy-btn:active {
  transform: scale(0.98);
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  padding: 64px 0 32px;
  margin-top: 80px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.footer-brand span {
  color: var(--primary);
}

.footer-brand p {
  color: var(--text-secondary);
  max-width: 320px;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.link-group h4 {
  margin-bottom: 16px;
  font-size: 1rem;
  font-weight: 600;
}

.link-group ul {
  list-style: none;
}

.link-group li {
  margin-bottom: 12px;
}

.link-group a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.link-group a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.copyright {
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  color: var(--text-secondary);
  font-size: 1.25rem;
  transition: color 0.2s;
}

.social-links a:hover {
  color: var(--text-primary);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

.fade-in {
  opacity: 0;
  animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* RTL Specific Adjustments */
[dir="rtl"] .terminal-buttons {
  margin-inline-start: 0;
  margin-inline-end: 16px;
}

[dir="rtl"] .social-links {
  flex-direction: row-reverse;
}

[dir="rtl"] .footer-links {
  flex-direction: row-reverse;
}

[dir="rtl"] .hero-btns {
  flex-direction: row-reverse;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 24px;
    gap: 20px;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding: 120px 0 60px;
  }

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

  .footer-top {
    flex-direction: column;
    gap: 32px;
  }

  .footer-links {
    flex-direction: column;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .terminal-content {
    font-size: 0.75rem;
    padding: 16px;
  }

  .t-copy-btn {
    position: static;
    transform: none;
    margin-top: 16px;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero h1 {
    font-size: 2rem;
  }

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

  .grid-3 {
    grid-template-columns: 1fr;
  }
}