/* ==========================================================================
   AndroApps Group / AndroFrame Studio - Official Website & Web Application
   Design System & Master Stylesheet
   ========================================================================== */

/* --- Custom Properties / CSS Variables --- */
:root {
  /* Color Palette - Dark Theme Default */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(19, 26, 43, 0.75);
  --bg-card-hover: rgba(28, 38, 64, 0.85);
  --bg-input: #1a2338;
  --bg-glass: rgba(17, 24, 39, 0.7);
  --bg-glass-strong: rgba(17, 24, 39, 0.92);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0a0e17;

  --accent-primary: #6366f1;       /* Indigo */
  --accent-secondary: #8b5cf6;     /* Violet */
  --accent-tertiary: #ec4899;      /* Rose */
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  --accent-gradient-hover: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #db2777 100%);
  --glow-primary: rgba(99, 102, 241, 0.35);
  --glow-secondary: rgba(139, 92, 246, 0.25);

  --brand-play: #00875a;
  --brand-play-hover: #00704a;
  --brand-amber: #f59e0b;
  --brand-rose: #f43f5e;
  --brand-emerald: #10b981;
  --brand-cyan: #06b6d4;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.6);
  --border-card: rgba(255, 255, 255, 0.1);

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 25px var(--glow-primary);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 280ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);

  --navbar-height: 76px;
  --max-width: 1240px;
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: #ffffff;
  --bg-input: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.8);
  --bg-glass-strong: rgba(255, 255, 255, 0.96);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #f8fafc;

  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-card: rgba(15, 23, 42, 0.1);
  --border-focus: rgba(99, 102, 241, 0.8);

  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 6px 18px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 14px 34px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.2);
}

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

html {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--navbar-height) + 16px);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
  background: transparent;
}

ul, ol {
  list-style: none;
}

::selection {
  background-color: var(--accent-primary);
  color: #ffffff;
}

/* --- Layout Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 96px 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--accent-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: 1000;
  background: transparent;
  transition: background-color var(--transition-normal), backdrop-filter var(--transition-normal), border-bottom var(--transition-normal), box-shadow var(--transition-normal);
}

.navbar.scrolled {
  background: var(--bg-glass-strong);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.125rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary);
}

.brand-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-secondary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--accent-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
  transform: rotate(15deg);
}

.btn-play-store {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  background: var(--brand-play);
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(0, 135, 90, 0.3);
  transition: all var(--transition-fast);
}

.btn-play-store:hover {
  background: var(--brand-play-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 135, 90, 0.4);
  color: #ffffff;
}

.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transform: translateY(-110%);
  transition: transform var(--transition-normal);
  z-index: 999;
}

.mobile-nav-drawer.open {
  transform: translateY(0);
}

.mobile-nav-link {
  font-size: 1.125rem;
  font-weight: 600;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}

/* --- Hero Section --- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--navbar-height) + 60px);
  padding-bottom: 96px;
  overflow: hidden;
}

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 85% 15%, rgba(139, 92, 246, 0.25) 0%, transparent 45%),
    radial-gradient(circle at 15% 55%, rgba(99, 102, 241, 0.2) 0%, transparent 45%),
    linear-gradient(180deg, rgba(10, 14, 23, 0.82) 0%, rgba(10, 14, 23, 0.95) 100%),
    url('../images/androframe_header_4096x2304.jpg') center/cover no-repeat;
  z-index: 1;
}

[data-theme="light"] .hero-bg-overlay {
  background: 
    radial-gradient(circle at 85% 15%, rgba(139, 92, 246, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 15% 55%, rgba(99, 102, 241, 0.12) 0%, transparent 45%),
    linear-gradient(180deg, rgba(248, 250, 252, 0.88) 0%, rgba(248, 250, 252, 0.96) 100%),
    url('../images/androframe_header_4096x2304.jpg') center/cover no-repeat;
}

.hero-container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}

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

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--accent-primary);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
  width: fit-content;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-headline {
  font-size: clamp(2.5rem, 5.2vw, 3.85rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
}

.hero-subhead {
  font-size: 1.1875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 8px 24px var(--glow-primary);
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px var(--glow-primary);
  color: #ffffff;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  font-size: 1rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
  transition: all var(--transition-fast);
}

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

/* Hero Stats Row */
.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Hero Visual Showcase */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-phone-mockup {
  position: relative;
  width: 320px;
  height: 620px;
  background: #1e293b;
  border-radius: 44px;
  padding: 12px;
  box-shadow: 
    0 25px 60px -15px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(255, 255, 255, 0.15),
    0 0 40px var(--glow-primary);
  transform: perspective(1000px) rotateY(-8deg) rotateX(4deg);
  transition: transform var(--transition-normal);
}

.hero-phone-mockup:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 34px;
  overflow: hidden;
  position: relative;
  background: #0f172a;
  display: flex;
  flex-direction: column;
}

.phone-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 18px;
  background: #000000;
  border-radius: 10px;
  z-index: 10;
}

.phone-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.floating-app-pill {
  position: absolute;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  z-index: 5;
  animation: float 4s ease-in-out infinite;
}

.pill-1 {
  top: 15%;
  left: -40px;
  animation-delay: 0s;
}

.pill-2 {
  bottom: 20%;
  right: -30px;
  animation-delay: 2s;
}

.pill-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

.pill-text {
  display: flex;
  flex-direction: column;
}

.pill-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.pill-sub {
  font-size: 0.75rem;
  color: var(--accent-primary);
}

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

/* --- Section: Interactive Web Application (Live Studio) --- */
.studio-section {
  position: relative;
  overflow: hidden;
}

.studio-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 36px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
}

.canvas-viewport-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-input);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  min-height: 480px;
}

.canvas-container {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
  background: #111827;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
}

.canvas-container.grabbing {
  cursor: grabbing;
}

#studioCanvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.canvas-loading-spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--accent-primary);
  font-weight: 600;
}

.canvas-controls-bottom {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  width: 100%;
  max-width: 420px;
  justify-content: space-between;
}

.studio-tools-panel {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.tool-group-title {
  font-size: 0.9375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Preset Frames Selector */
.frames-selector-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.frame-option-card {
  position: relative;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  background: var(--bg-input);
  padding: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.frame-option-card:hover {
  transform: translateY(-2px);
  background: var(--bg-card-hover);
  border-color: var(--border-subtle);
}

.frame-option-card.active {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.1);
  box-shadow: 0 0 16px var(--glow-primary);
}

.frame-thumb-img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 6px;
  background: #0f172a;
}

.frame-name-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

/* Sample Photos & Upload Row */
.photo-source-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.sample-photo-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.sample-photo-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.sample-photo-btn.active {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.sample-thumb {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  object-fit: cover;
}

.btn-upload-photo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: var(--accent-gradient);
  color: #ffffff;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-upload-photo:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

/* Sliders & Adjustment controls */
.sliders-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.slider-input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-input);
  outline: none;
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 0 10px var(--glow-primary);
  transition: transform var(--transition-fast);
}

.slider-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Filter pills */
.filters-pills-row {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.filter-pill {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.filter-pill:hover,
.filter-pill.active {
  background: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
}

/* Greeting Text and Color Input */
.greeting-input-row {
  display: flex;
  gap: 10px;
}

.greeting-text-input {
  flex: 1;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.greeting-text-input:focus {
  border-color: var(--border-focus);
}

.color-picker-input {
  width: 44px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  padding: 2px;
}

/* Studio Actions & Store Promo */
.studio-export-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 8px;
}

.studio-store-promo-card {
  margin-top: 14px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
  border: 1px dashed rgba(99, 102, 241, 0.35);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.promo-text-wrap {
  display: flex;
  flex-direction: column;
}

.promo-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.promo-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* --- Section: Apps & Portfolio Catalog --- */
.apps-catalog-section {
  position: relative;
}

.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.category-filter-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  max-width: 100%;
  padding-bottom: 4px;
}

.filter-tab-btn {
  padding: 10px 20px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.filter-tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.filter-tab-btn.active {
  background: var(--accent-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--glow-primary);
}

.catalog-search-wrap {
  position: relative;
  min-width: 280px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.catalog-search-input {
  width: 100%;
  padding: 11px 16px 11px 42px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.catalog-search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.catalog-results-info {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* App Cards Grid */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 28px;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.app-card:hover {
  transform: translateY(-6px);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 18px 40px -10px rgba(0, 0, 0, 0.4), 0 0 20px var(--glow-primary);
  background: var(--bg-card-hover);
}

.app-card-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.app-icon-wrap {
  position: relative;
  width: 68px;
  height: 68px;
  flex-shrink: 0;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  background: #0f172a;
}

.app-icon-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-fast);
}

.app-card:hover .app-icon-img {
  transform: scale(1.06);
}

.app-header-meta {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.app-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.14);
  color: var(--accent-primary);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 4px;
  width: fit-content;
}

.app-title {
  font-size: 1.1875rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.app-rating-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

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

.app-tagline {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-secondary);
  margin-bottom: 8px;
}

.app-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 18px;
  flex: 1;
}

.app-features-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
}

.feature-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.app-actions-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.btn-card-install {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  background: var(--brand-play);
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.btn-card-install:hover {
  background: var(--brand-play-hover);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 135, 90, 0.4);
}

.btn-card-quickview {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

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

/* Empty State */
.catalog-empty-state {
  display: none;
  text-align: center;
  padding: 64px 20px;
  grid-column: 1 / -1;
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.6;
}

/* --- Section: Technology & Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

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

.feature-box-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(99, 102, 241, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  margin-bottom: 20px;
}

.feature-box-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-box-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Section: About Studio & Ecosystem --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text-wrap {
  display: flex;
  flex-direction: column;
}

.about-lead {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.about-body {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.about-check-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.about-check-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9375rem;
  font-weight: 600;
}

.about-check-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-dev-badge {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.about-dev-avatar {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  object-fit: cover;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
}

.about-dev-meta {
  display: flex;
  flex-direction: column;
}

.about-dev-name {
  font-size: 1.25rem;
  font-weight: 800;
}

.about-dev-role {
  font-size: 0.8125rem;
  color: var(--accent-primary);
  font-weight: 600;
}

.about-meta-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.about-meta-box {
  background: var(--bg-input);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.about-meta-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
}

.about-meta-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* --- Section: Testimonials / Community Love --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(10px);
}

.testimonial-rating {
  display: flex;
  gap: 4px;
  color: #fbbf24;
  margin-bottom: 14px;
}

.testimonial-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.875rem;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 0.875rem;
  font-weight: 700;
}

.author-app-ref {
  font-size: 0.75rem;
  color: var(--accent-primary);
}

/* --- Section: FAQ Accordion --- */
.faq-container {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item.open {
  border-color: var(--accent-primary);
  box-shadow: 0 4px 18px rgba(99, 102, 241, 0.12);
}

.faq-question-btn {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
}

.faq-chevron {
  transition: transform var(--transition-fast);
  color: var(--text-muted);
  flex-shrink: 0;
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  color: var(--accent-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-answer-inner {
  padding: 0 24px 22px 24px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --- Section: Contact & Support --- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 48px;
  backdrop-filter: blur(16px);
}

.contact-info-col {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.contact-channels-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.contact-channel-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.channel-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-input);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  border: 1px solid var(--border-subtle);
}

.channel-meta {
  display: flex;
  flex-direction: column;
}

.channel-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.channel-val {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* --- Footer --- */
.site-footer {
  background: #06090e;
  border-top: 1px solid var(--border-subtle);
  padding: 80px 0 36px 0;
  color: #94a3b8;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 56px;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.footer-brand-desc {
  font-size: 0.875rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-nav-link {
  font-size: 0.875rem;
  color: #94a3b8;
  transition: color var(--transition-fast);
}

.footer-nav-link:hover {
  color: #ffffff;
}

.footer-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.8125rem;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-disclaimer {
  font-size: 0.75rem;
  color: #64748b;
  margin-top: 12px;
  line-height: 1.5;
}

/* --- Modals & Overlays --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.open {
  display: flex;
  animation: fadeIn 0.25s ease;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  max-width: 680px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 36px;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
  animation: modalScale 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
  transform: rotate(90deg);
}

/* Modal Content Layouts */
.app-modal-header {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
}

.app-modal-icon {
  width: 84px;
  height: 84px;
  border-radius: 20px;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.app-modal-qr-section {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-input);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin: 24px 0;
}

.qr-code-box {
  width: 110px;
  height: 110px;
  background: #ffffff;
  padding: 8px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-code-box svg {
  width: 100%;
  height: 100%;
}

.qr-info-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.qr-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.qr-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(16px);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideInRight 0.3s ease;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.success {
  border-left: 4px solid #10b981;
}

.toast.info {
  border-left: 4px solid var(--accent-primary);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalScale {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

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

  .hero-subhead {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-stats-row {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
  }

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

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

  .contact-grid {
    grid-template-columns: 1fr;
    padding: 32px;
  }

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

@media (max-width: 768px) {
  :root {
    --navbar-height: 68px;
  }

  .nav-links,
  .nav-actions .btn-play-store {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

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

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .catalog-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .catalog-search-wrap {
    min-width: 100%;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
  }
}