/* 
 * Kuxel - Premium Wallpapers Landing Page
 * Custom Premium Design System & Styles
 */

/* ==========================================================================
   1. VARIABLES & DESIGN TOKENS
   ========================================================================== */
:root {
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Colors */
  --bg-darker: #080a0f;
  --bg-dark: #0e121a;
  --bg-card: #151b26;
  --bg-card-hover: #1e2533;

  --primary: #7933ff;
  /* Electric Indigo */
  --primary-glow: rgba(121, 51, 255, 0.5);
  --secondary: #00f0ff;
  /* Neon Cyan */
  --secondary-glow: rgba(0, 240, 255, 0.45);
  --accent: #ffd500;
  /* Neon Yellow */
  --accent-glow: rgba(255, 213, 0, 0.45);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Glassmorphism */
  --glass-bg: rgba(14, 18, 26, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-blur: blur(16px);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   2. RESET & BASE STYLES
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-darker);
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--bg-darker);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar Style */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: #1e293b;
  border-radius: 5px;
  border: 2px solid var(--bg-darker);
}

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

/* Background Ambient Glows */
body::before,
body::after {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  opacity: 0.35;
  filter: blur(140px);
}

body::before {
  top: -100px;
  right: -100px;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
}

body::after {
  top: 800px;
  left: -200px;
  background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
}

.ambient-glow-3 {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  opacity: 0.3;
  filter: blur(120px);
  bottom: 10%;
  right: -100px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
}

/* Common Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

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

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

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

/* Gradients */
.text-gradient {
  background: linear-gradient(135deg, #ffffff 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-neon {
  background: linear-gradient(135deg, #818cf8 0%, #00f0ff 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.3));
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }
}

/* ==========================================================================
   3. HEADER & NAVIGATION
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(8, 10, 15, 0.75);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border);
  transition: var(--transition-normal);
}

.header.scrolled {
  padding: 0.5rem 0;
  background: rgba(8, 10, 15, 0.92);
  border-bottom: 1px solid rgba(0, 240, 255, 0.25);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.8), 0 0 15px rgba(0, 240, 255, 0.15);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  transition: var(--transition-normal);
}

.header.scrolled .nav-container {
  height: 64px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  box-shadow: 0 0 15px var(--primary-glow);
  transition: var(--transition-normal);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.logo-link:hover .logo-img {
  transform: scale(1.08);
  border-color: var(--secondary);
  box-shadow: 0 0 25px var(--secondary-glow), inset 0 0 8px var(--secondary-glow);
  animation: logo-neon-pulse 2s infinite alternate;
}

@keyframes logo-neon-pulse {
  0% {
    box-shadow: 0 0 15px var(--secondary-glow), inset 0 0 4px var(--secondary-glow);
  }

  100% {
    box-shadow: 0 0 25px var(--primary-glow), 0 0 10px var(--secondary-glow), inset 0 0 8px var(--secondary-glow);
  }
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  font-family: var(--font-heading);
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #ffffff 50%, #c7d2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: var(--transition-fast);
}

.logo-link:hover .logo-text {
  filter: drop-shadow(0 0 8px var(--secondary-glow));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--secondary), var(--accent));
  transition: var(--transition-fast);
  box-shadow: 0 0 8px var(--secondary-glow);
}

.nav-link:hover {
  color: var(--text-primary);
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-btn {
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  background: linear-gradient(135deg, var(--primary), #4f46e5);
  box-shadow: 0 4px 15px var(--primary-glow);
  color: #fff;
  border: 1px solid rgba(99, 102, 241, 0.3);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-fast);
}

.nav-btn:hover {
  transform: translateY(-2px);
  border-color: var(--secondary);
  box-shadow: 0 0 25px var(--secondary-glow), 0 0 10px var(--primary-glow);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  width: 28px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-fast);
}

@media (max-width: 992px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: rgba(14, 18, 26, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--border);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transition: var(--transition-normal);
  }

  .nav-links.active {
    right: 0;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -7px);
  }
}

/* ==========================================================================
   4. HERO SECTION
   ========================================================================== */
.hero {
  padding: 180px 0 100px 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 4rem;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.hero-badge {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  background: rgba(0, 240, 255, 0.05);
  border: 1px solid rgba(0, 240, 255, 0.2);
  color: #c7d2fe;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: inset 0 0 10px rgba(0, 240, 255, 0.05);
  animation: pulse-badge 3s infinite;
}

@keyframes pulse-badge {

  0%,
  100% {
    border-color: rgba(0, 240, 255, 0.2);
    box-shadow: 0 0 0 rgba(0, 240, 255, 0), inset 0 0 10px rgba(0, 240, 255, 0.05);
    color: #c7d2fe;
  }

  50% {
    border-color: var(--secondary);
    box-shadow: 0 0 15px var(--secondary-glow), inset 0 0 10px var(--secondary-glow);
    color: #fff;
  }
}

.hero-badge svg {
  color: var(--secondary);
}

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-title span {
  display: block;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 580px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn-store {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-weight: 500;
  transition: var(--transition-fast);
}

.btn-store:hover {
  background: var(--bg-card-hover);
  border-color: var(--secondary);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5), 0 0 15px var(--secondary-glow);
}

.store-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.store-text span:first-child {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.store-text span:last-child {
  font-size: 1.05rem;
  font-weight: 700;
  font-family: var(--font-heading);
}

.hero-ratings {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 2rem;
}

.rating-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.rating-value {
  font-size: 1.75rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--text-primary);
}

.rating-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.rating-stars {
  display: flex;
  gap: 2px;
  color: #fbbf24;
}

/* ==========================================================================
   5. PHONE MOCKUP (INTERACTIVE)
   ========================================================================== */
.hero-mockup-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

/* Phone Glow Background */
.phone-ambient-glow {
  position: absolute;
  width: 120%;
  height: 120%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, rgba(0, 240, 255, 0.2) 40%, transparent 70%);
  z-index: -1;
  filter: blur(50px);
  animation: rotate-glow 20s infinite linear;
}

@keyframes rotate-glow {
  0% {
    transform: rotate(0deg) scale(1);
  }

  50% {
    transform: rotate(180deg) scale(1.1);
  }

  100% {
    transform: rotate(360deg) scale(1);
  }
}

/* High Fidelity 3D Phone Mockup */
.phone-mockup {
  width: 320px;
  height: 640px;
  background: #090d16;
  border-radius: 46px;
  padding: 12px;
  border: 4px solid #273142;
  box-shadow:
    0px 25px 50px -12px rgba(0, 0, 0, 0.8),
    inset 0px 2px 4px rgba(255, 255, 255, 0.2),
    0 0 40px var(--primary-glow);
  position: relative;
  transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
  transition: transform 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease;
}

.phone-mockup:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg) scale(1.02);
  border-color: var(--secondary);
  box-shadow:
    0px 25px 50px -12px rgba(0, 0, 0, 0.8),
    inset 0px 2px 4px rgba(255, 255, 255, 0.2),
    0 0 35px var(--secondary-glow),
    0 0 15px var(--primary-glow);
}

/* Dynamic Notch / Dynamic Island */
.phone-island {
  position: absolute;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 24px;
  background: #000;
  border-radius: 20px;
  z-index: 10;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 8px;
}

.phone-island::before {
  content: '';
  width: 8px;
  height: 8px;
  background: #111827;
  border-radius: 50%;
  box-shadow: inset 0 0 3px rgba(0, 255, 255, 0.6);
}

/* Phone Screen */
.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 36px;
  overflow: hidden;
  position: relative;
  background-size: cover;
  background-position: center;
  transition: background-image 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: inset 0px 0px 20px rgba(0, 0, 0, 0.8);
}

/* Screen overlay sheen */
.phone-screen::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 40%, rgba(0, 0, 0, 0.2) 100%);
  pointer-events: none;
  z-index: 5;
}

/* Wallpaper Inner Elements (Simulating OS widgets) */
.os-widget {
  position: absolute;
  top: 60px;
  left: 0;
  width: 100%;
  text-align: center;
  z-index: 4;
  color: #fff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
  font-family: var(--font-heading);
}

.widget-time {
  font-size: 2.8rem;
  font-weight: 300;
  line-height: 1;
}

.widget-date {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

/* App Simulator Bottom Navigation Indicator */
.os-home-bar {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 110px;
  height: 4px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 10px;
  z-index: 4;
}

/* Floating App UI Over the screen */
.mockup-ui-card {
  position: absolute;
  bottom: 30px;
  left: 12px;
  right: 12px;
  background: rgba(8, 10, 15, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 20px;
  padding: 0.85rem 1rem;
  z-index: 6;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6), 0 0 15px rgba(0, 240, 255, 0.15);
  transform: translateY(0);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.mockup-ui-card:hover {
  transform: translateY(-3px);
  border-color: var(--secondary);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6), 0 0 20px var(--secondary-glow);
}

.mockup-ui-info {
  display: flex;
  flex-direction: column;
}

.mockup-ui-title {
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-heading);
}

.mockup-ui-btn {
  background: var(--primary);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  cursor: pointer;
  transition: var(--transition-fast);
}

.mockup-ui-btn:hover {
  transform: scale(1.1);
  background: var(--secondary);
}

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-content {
    align-items: center;
  }

  .hero-badge {
    align-self: center;
  }

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

  .hero-ratings {
    justify-content: center;
    width: 100%;
  }
}

/* Interactive Mockup Control Panel */
.simulator-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  background: var(--bg-card);
  padding: 0.35rem;
  border-radius: 30px;
  border: 1px solid var(--border);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.simulator-tabs:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 5px 20px rgba(99, 102, 241, 0.15);
}

.sim-tab-btn {
  background: none;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.sim-tab-btn:hover {
  color: var(--text-primary);
}

.sim-tab-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 15px var(--primary-glow);
}

/* ==========================================================================
   6. STATS SECTION
   ========================================================================== */
.stats {
  padding: 60px 0;
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.stat-number {
  font-size: 3rem;
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, #fff 30%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 8px var(--secondary-glow));
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem 1.5rem;
  }
}

/* ==========================================================================
   7. FEATURES SECTION
   ========================================================================== */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 4rem auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.section-subtitle {
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.section-title {
  font-size: 2.75rem;
  font-weight: 800;
}

.section-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

/* Glow Card Style */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle 200px at var(--mouse-x, 0) var(--mouse-y, 0), rgba(0, 240, 255, 0.2), transparent 80%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

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

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--secondary);
  box-shadow:
    0 20px 40px -15px rgba(0, 0, 0, 0.7),
    0 0 25px var(--secondary-glow),
    inset 0 1px 1px rgba(255, 255, 255, 0.05);
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  transition: var(--transition-fast);
}

.feature-card:hover .feature-icon-wrapper {
  background: var(--secondary);
  color: #000;
  box-shadow: 0 0 20px var(--secondary-glow);
  transform: scale(1.05);
  border-color: var(--secondary);
}

.feature-card-title {
  font-size: 1.35rem;
  font-weight: 700;
}

.feature-card-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Badge Coming Soon */
.badge-coming-soon {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: rgba(255, 213, 0, 0.08);
  border: 1px solid rgba(255, 213, 0, 0.25);
  color: var(--accent);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 0 12px rgba(255, 213, 0, 0.15);
  transition: var(--transition-fast);
}

.feature-card:hover .badge-coming-soon {
  background: rgba(255, 213, 0, 0.18);
  border-color: rgba(255, 213, 0, 0.5);
  box-shadow: 0 0 16px rgba(255, 213, 0, 0.3);
}

@media (max-width: 992px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   8. WALLPAPER SHOWCASE GALLERY
   ========================================================================== */
.gallery-filters {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.65rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow), inset 0 0 8px rgba(255, 255, 255, 0.2);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.gallery-item {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 9 / 16;
  background: var(--bg-card);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: block;
}

.gallery-item.hidden {
  display: none;
}

.gallery-img-wrapper {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.gallery-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(8, 10, 15, 0.95) 0%, rgba(8, 10, 15, 0.4) 50%, rgba(0, 0, 0, 0) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  z-index: 2;
}

.gallery-item:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.7), 0 0 20px var(--accent-glow);
}

.gallery-item:hover .gallery-img {
  transform: scale(1.08);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transform: translateY(10px);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.gallery-item:hover .gallery-info {
  transform: translateY(0);
}

.gallery-title {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: var(--font-heading);
}

.gallery-category {
  font-size: 0.8rem;
  color: var(--secondary);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-shadow: 0 0 8px var(--secondary-glow);
}

@media (max-width: 992px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

/* ==========================================================================
   9. HOW IT WORKS
   ========================================================================== */
.how-it-works {
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  position: relative;
}

.step-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
  position: relative;
  z-index: 2;
}

.step-number {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-hover) 100%);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--accent);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  position: relative;
  transition: var(--transition-normal);
}

.step-card:hover .step-number {
  transform: scale(1.08);
  border-color: var(--accent);
  color: #000;
  background: var(--accent);
  box-shadow: 0 0 25px var(--accent-glow);
}

.step-title {
  font-size: 1.35rem;
  font-weight: 700;
}

.step-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Connective line in steps */
.steps-grid::before {
  content: '';
  position: absolute;
  top: 35px;
  left: 10%;
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
  z-index: 1;
}

@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

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

/* ==========================================================================
   10. DOWNLOAD CTA
   ========================================================================== */
.cta-block {
  background: linear-gradient(135deg, #0e121a 0%, #080a0f 100%);
  border: 1px solid rgba(0, 240, 255, 0.15);
  border-radius: 32px;
  padding: 5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 30px rgba(99, 102, 241, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

.cta-block:hover {
  border-color: rgba(0, 240, 255, 0.4);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 40px var(--secondary-glow);
}

/* Glowing grid overlay for CTA */
.cta-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
  z-index: 1;
}

/* Radial Glow behind CTA content */
.cta-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 0;
  filter: blur(50px);
}

.cta-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  max-width: 700px;
}

.cta-title {
  font-size: 3.25rem;
  font-weight: 800;
}

.cta-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
}

@media (max-width: 768px) {
  .cta-block {
    padding: 4rem 2rem;
  }

  .cta-title {
    font-size: 2.25rem;
  }

  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }

  .cta-buttons .btn-store {
    width: 100%;
    justify-content: center;
  }
}

/* ==========================================================================
   11. LIGHTBOX MODAL
   ========================================================================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 10, 15, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  padding: 2rem;
}

.modal.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 28px;
  width: 100%;
  max-width: 900px;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.9), 0 0 40px rgba(99, 102, 241, 0.15);
  transform: scale(0.9);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), border-color 0.4s ease, box-shadow 0.4s ease;
  position: relative;
}

.modal-content:hover {
  border-color: var(--secondary);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.9), 0 0 50px var(--secondary-glow);
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  cursor: pointer;
  z-index: 10;
  transition: var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: rotate(90deg);
}

.modal-preview-panel {
  background: var(--bg-darker);
  height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.modal-preview-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-info-panel {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.75rem;
}

.modal-cat {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.modal-title {
  font-size: 2.25rem;
  font-weight: 800;
}

.modal-meta-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
}

.modal-meta-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
}

.modal-meta-label {
  color: var(--text-secondary);
}

.modal-meta-val {
  font-weight: 600;
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.btn-download-hd {
  padding: 1rem;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 4px 20px var(--primary-glow);
  color: #fff;
  font-weight: 700;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid rgba(0, 240, 255, 0.2);
}

.btn-download-hd:hover {
  transform: translateY(-2px);
  border-color: var(--secondary);
  box-shadow: 0 8px 30px var(--secondary-glow), 0 0 15px var(--primary-glow);
  background: linear-gradient(135deg, var(--secondary), var(--primary));
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.modal-tag {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .modal-content {
    grid-template-columns: 1fr;
    max-height: 90vh;
    overflow-y: auto;
  }

  .modal-preview-panel {
    height: 300px;
  }

  .modal-info-panel {
    padding: 1.75rem;
  }

  .modal-title {
    font-size: 1.75rem;
  }

  .modal-close-btn {
    top: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.6);
  }
}

/* ==========================================================================
   12. FOOTER
   ========================================================================== */
.footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border);
  padding: 80px 0 40px 0;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-brand-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-col-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-link-item a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.footer-link-item a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-newsletter {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-newsletter-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.35rem;
  border-radius: 12px;
  width: 100%;
}

.newsletter-input {
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  flex-grow: 1;
  width: 60%;
}

.newsletter-input:focus {
  outline: none;
}

.newsletter-btn {
  background: var(--primary);
  border: none;
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.newsletter-btn:hover {
  background: var(--secondary);
  transform: scale(1.03);
}

.footer-socials {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.social-link:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 15px var(--primary-glow);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
  }
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* ==========================================================================
   13. RESPONSIVE OPTIMIZATIONS FOR MOBILE (SMALL SCREENS <= 576px, <= 480px, <= 380px)
   ========================================================================== */

@media (max-width: 576px) {
  /* Hero Section Typography */
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-description {
    font-size: 1rem;
  }

  /* Feature Cards Padding */
  .feature-card {
    padding: 1.5rem;
    gap: 1.25rem;
  }
  
  /* Disable Phone 3D Rotation on mobile to prevent overflow */
  .phone-mockup {
    transform: none !important;
  }
  .phone-mockup:hover {
    transform: scale(1.02) !important;
  }
}

@media (max-width: 480px) {
  /* Header navigation CTA button adjustments */
  .nav-btn span {
    display: none;
  }
  .nav-btn {
    padding: 0.75rem;
    border-radius: 50%;
  }
  
  /* Hero Section Ratings */
  .hero-ratings {
    gap: 1rem;
    padding-top: 1.5rem;
  }
  .rating-value {
    font-size: 1.4rem;
  }
  .rating-stars svg {
    width: 12px;
    height: 12px;
  }
  
  /* Horizontal Scrolling for Simulator Categories (Tabs) */
  .simulator-tabs {
    overflow-x: auto;
    justify-content: flex-start;
    white-space: nowrap;
    border-radius: 20px;
    padding: 0.5rem;
    max-width: 100%;
    scrollbar-width: none; /* Hide scrollbar for Firefox */
    -webkit-overflow-scrolling: touch;
  }
  .simulator-tabs::-webkit-scrollbar {
    display: none; /* Hide scrollbar for Chrome/Safari */
  }
  .sim-tab-btn {
    flex-shrink: 0;
    padding: 0.5rem 0.85rem;
  }
  
  /* Horizontal Scrolling for Gallery Filters */
  .gallery-filters {
    justify-content: flex-start;
    overflow-x: auto;
    white-space: nowrap;
    padding: 0.25rem 0.25rem 0.75rem 0.25rem;
    gap: 0.5rem;
    max-width: 100%;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .gallery-filters::-webkit-scrollbar {
    display: none;
  }
  .filter-btn {
    flex-shrink: 0;
    padding: 0.5rem 1.15rem;
    font-size: 0.85rem;
  }

  /* Stats Section text scaling */
  .stat-number {
    font-size: 2.25rem;
  }
  
  /* CTA Block Mobile Padding & Font */
  .cta-block {
    padding: 3rem 1.25rem;
  }
  .cta-title {
    font-size: 1.85rem;
  }
  
  /* Lightbox Details Modal Mobile Optimization */
  .modal {
    padding: 1rem;
  }
  .modal-content {
    border-radius: 20px;
  }
  .modal-info-panel {
    padding: 1.25rem;
    gap: 1.25rem;
  }
  .modal-meta-list {
    padding: 1rem 0;
    gap: 0.85rem;
  }
  .modal-meta-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.15rem;
  }
  .modal-meta-val {
    font-size: 0.9rem;
  }
  .modal-title {
    font-size: 1.6rem;
  }
}

@media (max-width: 380px) {
  /* Phone Mockup resizing for <= 360px screen width */
  .phone-mockup {
    width: 270px;
    height: 540px;
    padding: 8px;
    border-radius: 36px;
  }
  
  .phone-screen {
    border-radius: 28px;
  }
  
  .phone-island {
    width: 80px;
    height: 20px;
    top: 15px;
  }
  
  .os-widget {
    top: 45px;
  }
  
  .widget-time {
    font-size: 2.2rem;
  }
  
  .mockup-ui-card {
    bottom: 25px;
    left: 8px;
    right: 8px;
    padding: 0.65rem 0.85rem;
    border-radius: 14px;
  }
  
  .mockup-ui-title {
    font-size: 0.75rem;
  }
  
  .mockup-ui-btn {
    width: 28px;
    height: 28px;
  }

  /* Hero title extra scaling */
  .hero-title {
    font-size: 2rem;
  }
  
  /* Header logo text reduction */
  .logo-text {
    font-size: 1.25rem;
  }
  .logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
  }
  .nav-container {
    height: 70px;
  }
}