/* =============================================
   Mersal SMS - Landing Page Styles
   ============================================= */

:root {
  /* Light Mode Colors */
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #DBEAFE;
  --secondary: #10B981;
  --accent: #F59E0B;
  --bg: #FFFFFF;
  --bg-alt: #F8FAFC;
  --bg-card: #FFFFFF;
  --text: #0F172A;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --border: #E2E8F0;
  --shadow: rgba(0, 0, 0, 0.08);
  --shadow-md: rgba(0, 0, 0, 0.12);
  --shadow-lg: rgba(0, 0, 0, 0.16);
  --gradient-start: #EFF6FF;
  --gradient-end: #F0FDF4;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition: all 0.25s ease;
  --font: 'Cairo', 'Segoe UI', sans-serif;
}

[data-theme="dark"] {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --primary-light: #1E3A5F;
  --secondary: #10B981;
  --accent: #F59E0B;
  --bg: #0F172A;
  --bg-alt: #1E293B;
  --bg-card: #1E293B;
  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --text-light: #64748B;
  --border: #334155;
  --shadow: rgba(0, 0, 0, 0.3);
  --shadow-md: rgba(0, 0, 0, 0.4);
  --shadow-lg: rgba(0, 0, 0, 0.5);
  --gradient-start: #0F172A;
  --gradient-end: #0F1F0A;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  direction: rtl;
  line-height: 1.7;
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

img {
  max-width: 100%;
  height: auto;
}

ul {
  list-style: none;
}

/* =============================================
   Typography
   ============================================= */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.section-label {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

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

section {
  padding: 80px 0;
}

/* =============================================
   Navbar
   ============================================= */
.navbar {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 1000;
  background: var(--bg);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
  height: 68px;
}

.navbar.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 2px 20px var(--shadow);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 20px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
}

.nav-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: var(--primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}

.nav-links a:hover {
  background: var(--bg-alt);
  color: var(--primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
}

.theme-toggle:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.btn-download-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: white;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}

.btn-download-nav:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav-mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* =============================================
   Hero Section
   ============================================= */
.hero {
  padding-top: 140px;
  padding-bottom: 80px;
  background: linear-gradient(160deg, var(--gradient-start) 0%, var(--bg) 60%, var(--gradient-end) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--secondary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-title .highlight {
  color: var(--primary);
  position: relative;
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  right: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  opacity: 0.4;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--primary);
  color: white;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  color: var(--text);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Phone Mockup */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.phone-mockup {
  width: 260px;
  height: 520px;
  background: var(--bg-card);
  border-radius: 36px;
  border: 2px solid var(--border);
  box-shadow: 0 40px 80px var(--shadow-lg), 0 0 0 8px var(--bg-alt);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-notch {
  width: 80px;
  height: 22px;
  background: var(--bg-alt);
  border-radius: 0 0 16px 16px;
  margin: 0 auto;
  border: 2px solid var(--border);
  border-top: none;
}

.phone-screen {
  flex: 1;
  padding: 12px;
  overflow: hidden;
  background: var(--bg-alt);
}

.phone-app-bar {
  background: var(--primary);
  color: white;
  padding: 12px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.phone-content {
  background: var(--bg-card);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  padding: 12px;
  margin-bottom: 8px;
}

.phone-msg-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
}

.phone-msg-row:last-child {
  border-bottom: none;
}

.msg-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.msg-status-dot.sent { background: var(--secondary); }
.msg-status-dot.pending { background: var(--accent); }
.msg-status-dot.failed { background: #EF4444; }

.msg-info {
  flex: 1;
  min-width: 0;
}

.msg-name {
  font-weight: 600;
  font-size: 0.78rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.msg-time {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Floating Cards */
.float-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: 0 8px 24px var(--shadow-md);
  font-size: 0.82rem;
  white-space: nowrap;
}

.float-card.card-sent {
  top: 60px;
  left: -40px;
  animation: float1 4s ease-in-out infinite;
}

.float-card.card-delivery {
  bottom: 80px;
  right: -30px;
  animation: float2 4s ease-in-out infinite 1s;
}

.float-card .card-icon {
  font-size: 1.1rem;
  margin-bottom: 4px;
  display: block;
}

.float-card .card-title {
  font-weight: 700;
  color: var(--text);
}

.float-card .card-value {
  color: var(--secondary);
  font-weight: 800;
  font-size: 1rem;
}

@keyframes float1 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes float2 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

/* =============================================
   Features Section
   ============================================= */
#features {
  background: var(--bg-alt);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px var(--shadow-md);
  border-color: var(--primary);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
  background: var(--primary-light);
}

.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* =============================================
   How It Works
   ============================================= */
#how-it-works {
  background: var(--bg);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 36px;
  right: 12.5%;
  left: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0.3;
  pointer-events: none;
}

.step-item {
  text-align: center;
  padding: 24px 16px;
  position: relative;
}

.step-number {
  width: 56px;
  height: 56px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
  position: relative;
  z-index: 1;
}

.step-icon {
  font-size: 1.4rem;
  display: block;
  margin-bottom: 12px;
}

.step-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* =============================================
   Download Section
   ============================================= */
#download {
  background: var(--bg-alt);
}

.download-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-bottom: 60px;
}

.download-card {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.download-card.featured {
  border-color: var(--primary);
}

.download-card.featured::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.download-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px var(--shadow-md);
}

.download-badge {
  display: inline-block;
  background: var(--secondary);
  color: white;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.download-badge.light {
  background: var(--accent);
}

.download-card-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  display: block;
}

.download-card-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.download-card-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.download-specs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.download-spec-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.download-spec-item .check {
  color: var(--secondary);
  font-weight: 700;
}

.download-spec-item .cross {
  color: var(--text-light);
}

.btn-download {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--primary);
  color: white;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  transition: var(--transition);
  width: 100%;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
  border: none;
  cursor: pointer;
}

.btn-download:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.btn-download.outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  box-shadow: none;
}

.btn-download.outline:hover {
  background: var(--primary-light);
}

.download-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: 12px;
  justify-content: center;
}

/* Permission sections inside download cards */
.download-perm-section {
  margin-bottom: 20px;
}

.perm-section-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  margin-top: 16px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.perm-section-title.perm-missing {
  color: var(--text-light);
}

.download-spec-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}

.download-spec-item:last-child {
  border-bottom: none;
}

.download-spec-item .check {
  color: var(--secondary);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.download-spec-item .cross {
  color: var(--text-light);
  flex-shrink: 0;
  margin-top: 2px;
}

.download-spec-item .check.star {
  color: var(--primary);
}

/* Extra permissions (Pro only) */
.download-spec-item.perm-extra {
  background: var(--primary-light);
  margin: 0 -4px;
  padding: 8px 4px;
  border-radius: var(--radius-sm);
  border-bottom: none;
  margin-bottom: 4px;
}

/* Disabled permissions (Lite) */
.download-spec-item.perm-off {
  opacity: 0.65;
}

.perm-name {
  display: block;
  font-weight: 600;
  color: var(--text);
  font-size: 0.88rem;
}

.perm-effect {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
  line-height: 1.5;
}

/* =============================================
   Play Protect Notice (in download card)
   ============================================= */
.play-protect-notice {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.play-protect-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  color: var(--text);
  margin-bottom: 2px;
}

.play-protect-icon {
  font-size: 1.1rem;
}

.play-protect-steps {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 2px;
}

.play-protect-steps .arrow {
  color: var(--text-light);
  font-weight: 400;
}

.play-protect-tip {
  font-size: 0.82rem;
  color: var(--secondary);
  font-weight: 600;
  margin-top: 2px;
}

/* =============================================
   Installation Guide
   ============================================= */
#installation {
  background: var(--bg);
}

.install-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.install-tab {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.install-tab.active, .install-tab:hover {
  border-color: var(--primary);
  background: var(--primary);
  color: white;
}

.install-content {
  display: none;
}

.install-content.active {
  display: block;
}

.install-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
  margin: 0 auto;
}

.install-step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 20px;
  align-items: start;
  padding-bottom: 32px;
  position: relative;
}

.install-step:not(:last-child)::before {
  content: '';
  position: absolute;
  top: 48px;
  right: 29px;
  width: 2px;
  height: calc(100% - 48px);
  background: linear-gradient(180deg, var(--primary), transparent);
  opacity: 0.3;
}

.install-step-num {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.install-step-body {
  padding-top: 8px;
}

.install-step-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.install-step-desc {
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.7;
}

.install-note {
  display: flex;
  gap: 10px;
  background: var(--primary-light);
  border: 1px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--primary);
}

.install-note.warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--accent);
  color: var(--accent);
}

/* Step badge (e.g. "نسخة كاملة فقط") */
.step-badge-pro {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  margin-right: 8px;
  vertical-align: middle;
}

/* Play Protect inline steps inside install guide */
.play-protect-steps-inline {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  padding: 14px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.pps-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pps-num {
  width: 22px;
  height: 22px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 800;
  flex-shrink: 0;
}

/* Screenshot gallery */
.install-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.gallery-item {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  aspect-ratio: 9/16;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  overflow: hidden;
  transition: var(--transition);
}

.gallery-item:hover {
  border-color: var(--primary);
  transform: scale(1.02);
}

.gallery-item .gallery-icon {
  font-size: 2.5rem;
  opacity: 0.4;
}

.gallery-item span {
  text-align: center;
  padding: 0 12px;
}

/* =============================================
   Requirements Section
   ============================================= */
#requirements {
  background: var(--bg-alt);
}

.req-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.req-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.req-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
}

.req-card-title .req-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.req-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.req-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.93rem;
}

.req-item .req-bullet {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
}

.req-item strong {
  color: var(--text);
}

.req-item span {
  color: var(--text-muted);
}

/* =============================================
   FAQ
   ============================================= */
#faq {
  background: var(--bg);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: var(--primary);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.97rem;
  gap: 16px;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
  transition: var(--transition);
}

.faq-item.open .faq-toggle {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 22px 18px;
}

/* =============================================
   Footer
   ============================================= */
footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 40px 0 24px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary);
}

.footer-logo .logo-icon {
  width: 34px;
  height: 34px;
  background: var(--primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* =============================================
   Utilities
   ============================================= */
.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-muted { color: var(--text-muted); }

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
}

.badge-green {
  background: rgba(16, 185, 129, 0.12);
  color: var(--secondary);
}

.badge-blue {
  background: var(--primary-light);
  color: var(--primary);
}

/* =============================================
   Animations
   ============================================= */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .steps-grid::before {
    display: none;
  }
}

@media (max-width: 768px) {
  section { padding: 60px 0; }

  .nav-links, .btn-download-nav {
    display: none;
  }

  .nav-mobile-toggle {
    display: flex;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px;
    right: 0;
    left: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 4px;
    z-index: 999;
  }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .phone-mockup {
    width: 200px;
    height: 400px;
  }

  .float-card {
    display: none;
  }

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

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

  .download-cards {
    grid-template-columns: 1fr;
  }

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

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

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

  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.8rem; }
  .section-title { font-size: 1.5rem; }
  .install-gallery { grid-template-columns: 1fr; }
}