/* ==========================================================================
   RuStore Downloader Design System (Production CSS)
   - Zero emojis: 100% SVG iconography
   - Pure CSS custom properties for dual-theme (RuStore Dark & Light)
   - Fully responsive: Mobile, Tablet, Desktop
   - Accessible & High Performance (Zero dependencies, <300ms FCP)
   ========================================================================== */

:root {
  /* Brand Palette (RuStore Official Electric Blue) */
  --color-primary: #0066ff;
  --color-primary-hover: #0052cc;
  --color-primary-active: #003db3;
  --color-primary-light: rgba(0, 102, 255, 0.12);
  --color-primary-subtle: rgba(0, 102, 255, 0.08);
  --color-primary-glow: rgba(0, 102, 255, 0.25);
  
  /* Canvas & Neutral Palette (Dark Mode - Default) */
  --color-bg: #0b1329;
  --color-surface: #111a36;
  --color-surface-elevated: #162244;
  --color-surface-subtle: #19274e;
  --color-surface-blur: rgba(11, 19, 41, 0.88);
  --color-border: #1e2e5c;
  --color-border-hover: #2e4380;
  
  /* Text Colors */
  --color-text-primary: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-text-inverse: #0b1329;

  /* Status & Trust Colors (RuStore Mint & Accents) */
  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.12);
  --color-danger: #ef4444;
  --color-danger-bg: rgba(239, 68, 68, 0.12);
  --color-warning: #f59e0b;
  --color-trust-mint: #10b981;
  --color-trust-mint-bg: rgba(16, 185, 129, 0.12);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* Shadows */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 6px 16px -2px rgba(0, 0, 0, 0.3), 0 2px 6px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 14px 30px -4px rgba(0, 102, 255, 0.18), 0 4px 10px -2px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);
  --shadow-card-hover: 0 12px 32px -4px rgba(0, 102, 255, 0.28);
  --shadow-modal: 0 25px 50px -12px rgba(0, 0, 0, 0.6);

  /* Squircle Radii System (RuStore & APKCube Spec) */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-squircle: 20%;
  --radius-card: 22px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

:root.light {
  /* Canvas & Neutral Palette (Light Mode - RuStore Official Clean) */
  --color-bg: #f4f6f9;
  --color-surface: #ffffff;
  --color-surface-elevated: #f8fafc;
  --color-surface-subtle: #ebedf2;
  --color-surface-blur: rgba(255, 255, 255, 0.88);
  --color-border: #e2e6ed;
  --color-border-hover: #cbd2df;
  
  /* Text Colors */
  --color-text-primary: #0f172a;
  --color-text-secondary: #5a6882;
  --color-text-muted: #8c9bb0;
  --color-text-inverse: #ffffff;

  /* Status & Trust Colors */
  --color-success: #059669;
  --color-success-bg: #ecfdf5;
  --color-danger: #ef4444;
  --color-danger-bg: #fef2f2;
  --color-warning: #f59e0b;
  --color-trust-mint: #059669;
  --color-trust-mint-bg: #d1fae5;

  /* Shadows */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 6px 16px -2px rgba(15, 23, 42, 0.07), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
  --shadow-lg: 0 14px 30px -4px rgba(0, 102, 255, 0.12), 0 4px 10px -2px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 2px 12px rgba(15, 23, 42, 0.06);
  --shadow-card-hover: 0 10px 25px -4px rgba(0, 102, 255, 0.15);
  --shadow-modal: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

button, input, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

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

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--color-surface-blur);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(0, 102, 255, 0.3);
}

.brand-title {
  font-weight: 700;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 1.75rem;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

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

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-header-control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 0.85rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  min-height: 2.25rem;
}

.btn-header-control:hover {
  background: var(--color-border);
  color: var(--color-text-primary);
  border-color: var(--color-border-hover);
}

.lang-pill {
  letter-spacing: 0.05em;
  font-weight: 700;
  font-size: 0.82rem;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.15rem;
  background: var(--color-primary);
  color: #ffffff;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.header-cta:hover {
  background: var(--color-primary-hover);
  color: #ffffff;
  transform: translateY(-1px);
}

/* ==========================================================================
   Hero Section & Live Search Explorer
   ========================================================================== */
.hero-section {
  position: relative;
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
  background: radial-gradient(circle at 50% 10%, var(--color-primary-light) 0%, transparent 60%);
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.25rem;
}

.hero-badge svg {
  width: 1rem;
  height: 1rem;
  color: var(--color-primary);
}

.hero-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3.4rem;
  }
}

.hero-subtitle {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

/* Search Box Container */
.search-container {
  max-width: 44rem;
  margin-left: auto;
  margin-right: auto;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 1rem 1.15rem;
  box-shadow: 0 10px 30px -5px rgba(0, 102, 255, 0.08), 0 4px 12px rgba(15, 23, 42, 0.04);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-container:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 14px 36px -4px rgba(0, 102, 255, 0.18);
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.35rem 0.4rem 0.35rem 1rem;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.search-input-wrapper:focus-within {
  background-color: var(--color-surface);
  border-color: var(--color-primary);
}

.search-icon-left {
  color: var(--color-text-muted);
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  margin-right: 0.5rem;
  pointer-events: none;
}

#searchInput {
  flex: 1;
  min-width: 0;
  padding: 0.65rem 0.5rem;
  font-size: 1.02rem;
  border: none;
  background: transparent;
  color: var(--color-text-primary);
  outline: none;
}

.kbd-shortcut {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.45rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  margin-right: 0.4rem;
  pointer-events: none;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .kbd-shortcut {
    display: none;
  }
}

#clearSearch {
  color: var(--color-text-muted);
  padding: 0.35rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.35rem;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

#clearSearch:hover {
  color: var(--color-text-primary);
  background-color: var(--color-surface-subtle);
}

#clearSearch.hidden {
  display: none !important;
}

.btn-search-action {
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-search-action:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 102, 255, 0.35);
}

.btn-search-action:active {
  background: var(--color-primary-active);
  transform: translateY(0);
}

/* Trust Badges Row (Inspired by RuStore Official) */
.trust-badges-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.85rem;
}

.trust-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.trust-badge-pill:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.trust-icon-box {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-icon-box.mint {
  background-color: #d1fae5;
}

.trust-icon-box.blue {
  background-color: #dbeafe;
}

.trust-icon-box.purple {
  background-color: #ede9fe;
}

/* Device Selector Controls */
.device-selector-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--color-border);
}

.device-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  user-select: none;
}

.device-label svg {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.device-label input[type="radio"] {
  accent-color: var(--color-primary);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

.device-label:has(input:checked) {
  color: var(--color-primary);
  font-weight: 600;
}

.device-label:has(input:checked) svg {
  color: var(--color-primary);
}

/* User Device OS Compatibility Selector */
.user-os-selector-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-size: 0.84rem;
  color: var(--color-text-secondary);
}

.os-label {
  font-weight: 500;
  color: var(--color-text-muted);
}

.os-dropdown {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.6rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.os-dropdown:hover,
.os-dropdown:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Recent Searches Row */
.recent-searches {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.15rem;
  font-size: 0.85rem;
}

.recent-searches.hidden {
  display: none !important;
}

.recent-title {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.82rem;
}

.recent-chips-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.recent-chip {
  padding: 0.25rem 0.65rem;
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.recent-chip:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.btn-clear-recent {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  transition: color var(--transition-fast);
  cursor: pointer;
}

.btn-clear-recent:hover {
  color: var(--color-danger);
}

/* Trending Search Chips */
.trending-chips {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.trending-title {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.chip-btn {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.chip-btn:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Curated Category Tabs (Inspired by RuStore) */
.category-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.category-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-tab svg {
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.category-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.category-tab:hover svg {
  color: var(--color-primary);
}

.category-tab.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 85, 255, 0.25);
}

.category-tab.active svg {
  color: #ffffff;
}

/* ==========================================================================
   Search Results Grid & App Cards
   ========================================================================== */
.results-section {
  padding-bottom: 4rem;
}

#searchResults {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  #searchResults {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  #searchResults {
    grid-template-columns: repeat(3, 1fr);
  }
}

.app-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary);
}

.app-header {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.app-icon {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: var(--radius-squircle);
  object-fit: cover;
  flex-shrink: 0;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.app-title-group {
  min-width: 0;
  flex: 1;
}

.app-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.3;
  margin-bottom: 0.25rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.app-package {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.4rem;
}

/* Rating Stars (Pure SVG) */
.rating-group {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.stars-container {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.star-svg {
  width: 14px;
  height: 14px;
  fill: #f59e0b;
}

.star-svg.empty {
  fill: #cbd5e1;
}

/* App Badges & Metadata (APKCube High-Density Spec) */
.app-meta-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.6rem;
  font-size: 0.76rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.meta-badge.downloads {
  background-color: var(--color-primary-subtle);
  border-color: rgba(0, 102, 255, 0.25);
  color: var(--color-primary);
}

.meta-badge.sdk {
  background-color: var(--color-trust-mint-bg);
  border-color: rgba(16, 185, 129, 0.25);
  color: var(--color-trust-mint);
}

.meta-badge.size {
  background-color: var(--color-surface-subtle);
  border-color: var(--color-border);
  color: var(--color-text-secondary);
}

.meta-badge.ver {
  background-color: var(--color-surface-subtle);
  border-color: var(--color-border);
  color: var(--color-text-muted);
}

/* Device OS Compatibility Badges */
.compat-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.6rem;
  font-size: 0.74rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
}

.compat-badge.ok {
  background-color: rgba(5, 150, 105, 0.1);
  border: 1px solid rgba(5, 150, 105, 0.25);
  color: #059669;
}

html.dark .compat-badge.ok {
  background-color: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.compat-badge.warn {
  background-color: rgba(220, 38, 38, 0.1);
  border: 1px solid rgba(220, 38, 38, 0.25);
  color: #dc2626;
}

html.dark .compat-badge.warn {
  background-color: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
  color: #f87171;
}

/* Interactive Company / Publisher Button */
.app-company-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  padding: 0;
  margin-bottom: 0.35rem;
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-fast);
}

.app-company-btn:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.app-company-btn svg {
  flex-shrink: 0;
  opacity: 0.7;
}

/* Screenshots Preview Row */
.screenshots-container {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-top: 1rem;
  margin-bottom: 1rem;
  scrollbar-width: thin;
}

.screenshots-container::-webkit-scrollbar {
  height: 4px;
}

.screenshots-container::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.screenshot-thumb {
  width: 6.5rem;
  height: 11.5rem;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  cursor: pointer;
  border: 1px solid var(--color-border);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.screenshot-thumb:hover {
  opacity: 0.9;
  transform: scale(1.02);
}

/* Action Buttons inside Card */
.card-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

.btn-download-direct {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  box-shadow: 0 4px 10px rgba(0, 85, 255, 0.2);
}

.btn-download-direct:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 6px 14px rgba(0, 85, 255, 0.3);
  transform: translateY(-1px);
}

.btn-download-direct svg {
  width: 1.15rem;
  height: 1.15rem;
}

.btn-card-secondary {
  padding: 0.7rem 0.85rem;
  background-color: var(--color-surface-subtle);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

/* ==========================================================================
   Features Section
   ========================================================================== */
.features-section {
  padding: 5rem 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  max-width: 44rem;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: 0.75rem;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.5rem;
  }
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  padding: 2rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 85, 255, 0.3);
}

.feature-icon-box {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-icon-box svg {
  width: 1.75rem;
  height: 1.75rem;
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   How It Works (Step-by-Step)
   ========================================================================== */
.steps-section {
  padding: 5rem 0;
  background-color: var(--color-bg);
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step-card {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 2.25rem 1.75rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.step-number {
  position: absolute;
  top: -1.25rem;
  left: 50%;
  transform: translateX(-50%);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 85, 255, 0.3);
}

.step-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: 0.75rem;
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Guide Tabs & Panels (Interactive Installation Manual) */
.guide-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.guide-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.guide-tab svg {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.guide-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.guide-tab:hover svg {
  color: var(--color-primary);
}

.guide-tab.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 85, 255, 0.25);
}

.guide-tab.active svg {
  color: #ffffff;
}

.guide-panel {
  animation: fadeIn 0.25s ease-out;
}

.guide-panel.hidden {
  display: none !important;
}

.anchor-target {
  position: relative;
  top: -4rem;
  display: block;
  visibility: hidden;
  height: 0;
}

/* ==========================================================================
   FAQ Section (Accordion)
   ========================================================================== */
.faq-section {
  padding: 5rem 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.faq-container {
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

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

.faq-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text-primary);
  cursor: pointer;
  user-select: none;
  list-style: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-text-muted);
  transition: transform var(--transition-normal);
}

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

.faq-content {
  padding: 0 1.5rem 1.25rem 1.5rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background-color: #0b1329;
  color: #94a3b8;
  padding: 4rem 0 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-top {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

@media (min-width: 768px) {
  .footer-top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-brand {
  max-width: 24rem;
}

.footer-brand-title {
  color: #ffffff;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.footer-brand-desc {
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-links-group {
  display: flex;
  gap: 3rem;
}

.footer-col-title {
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-list a {
  color: #94a3b8;
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

.footer-list a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  font-size: 0.82rem;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.disclaimer-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  color: #cbd5e1;
}

.disclaimer-badge svg {
  width: 1rem;
  height: 1rem;
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

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

.modal.hidden {
  display: none !important;
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 38rem;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  padding: 1.75rem;
  animation: modalScaleUp 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalScaleUp {
  from {
    transform: scale(0.96);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: var(--color-surface-subtle);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-text-primary);
  background: var(--color-border);
}

.modal-close svg {
  width: 1.15rem;
  height: 1.15rem;
}

.modal-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 1.25rem;
  padding-right: 2rem;
}

/* Architecture & ABI Selector (RuStore Split APK Engine) */
.abi-selector-wrapper {
  margin-bottom: 1rem;
  padding: 0.75rem 0.85rem;
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.abi-selector-wrapper.hidden {
  display: none !important;
}

.abi-title {
  display: block;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.abi-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.abi-chip {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: 0.28rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.abi-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.abi-chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

/* Download Results Box */
#downloadResults {
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  overflow-x: auto;
  max-height: 50vh;
}

.download-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: var(--color-text-inverse) !important;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.88rem;
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

.download-link-btn:hover {
  background: var(--color-primary-hover);
}

/* Image Preview Modal Specifics */
#imagePreviewModal .modal-content {
  max-width: 90vw;
  max-height: 92vh;
  padding: 0.5rem;
  background: transparent;
  box-shadow: none;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
}

.preview-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

#previewImage {
  max-height: 85vh;
  max-width: 88vw;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  object-fit: contain;
}

.preview-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-full);
  background: rgba(15, 23, 42, 0.7);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.preview-nav-btn:hover {
  background: rgba(15, 23, 42, 0.95);
}

.preview-nav-btn svg {
  width: 1.5rem;
  height: 1.5rem;
}

#prevImage { left: -1rem; }
#nextImage { right: -1rem; }

#imageProgress {
  position: absolute;
  bottom: -2rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.75);
  color: #ffffff;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Comments Modal Specifics */
#commentsModal .modal-content {
  max-width: 44rem;
}

/* Rating Summary Breakdown Visual */
.comments-summary-box {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1.25rem;
  align-items: center;
  padding: 1.15rem;
  margin-bottom: 1.25rem;
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.comments-summary-box.hidden {
  display: none !important;
}

@media (max-width: 480px) {
  .comments-summary-box {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    text-align: center;
  }
}

.summary-score-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
}

.summary-big-score {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1;
}

.summary-star-row {
  display: flex;
  align-items: center;
  gap: 2px;
}

.summary-star-row svg {
  width: 14px;
  height: 14px;
}

.summary-total-count {
  font-size: 0.76rem;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-top: 0.2rem;
}

.summary-bars-col {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.rating-bar-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.rating-bar-num {
  width: 1.2rem;
  font-weight: 600;
  text-align: right;
  flex-shrink: 0;
}

.rating-bar-track {
  flex: 1;
  height: 7px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.rating-bar-fill {
  height: 100%;
  background: #f59e0b;
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

.rating-bar-pct {
  width: 2.2rem;
  text-align: right;
  font-size: 0.72rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* Modern Segmented Review Filter Chips */
.comments-filter-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.15rem;
}

.comments-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.comments-filter-chips.hidden {
  display: none !important;
}

.comment-filter-btn {
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.comment-filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.comment-filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
}

#commentsFilterOption {
  display: none !important;
}

.comment-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 0.75rem;
}

.comment-author {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.comment-date {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.comment-body {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
  line-height: 1.5;
}

.comment-likes {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
}

.likes-count { color: var(--color-success); }
.dislikes-count { color: var(--color-danger); }

.dev-response-box {
  background-color: var(--color-surface);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.75rem;
  margin-top: 0.75rem;
}

.dev-response-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* State Indicators (Spinners, Skeletons) */
.loading-box {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-secondary);
}

.spinner-svg {
  width: 2.25rem;
  height: 2.25rem;
  color: var(--color-primary);
  animation: spin 0.8s linear infinite;
  margin: 0 auto 0.75rem auto;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.alert-box {
  grid-column: 1 / -1;
  text-align: center;
  padding: 1.5rem;
  border-radius: var(--radius-md);
}

.alert-box.error {
  background-color: var(--color-danger-bg);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--color-danger);
}

.alert-box.info {
  background-color: var(--color-primary-light);
  border: 1px solid rgba(0, 85, 255, 0.2);
  color: var(--color-primary);
}

/* ==========================================================================
   Dark Mode & Utility Enhancements
   ========================================================================== */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0b1329;
    --color-surface: #131d38;
    --color-surface-subtle: #1c2747;
    --color-border: #223057;
    --color-border-hover: #2e4175;
    --color-text-primary: #f8fafc;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-primary-light: rgba(0, 85, 255, 0.2);
  }
  .site-header {
    background-color: rgba(11, 19, 41, 0.85);
  }
  #searchInput {
    background-color: var(--color-surface);
    color: var(--color-text-primary);
  }
  .chip-btn {
    background-color: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text-secondary);
  }
}

.download-action-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-copy-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  background-color: var(--color-surface-subtle);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.btn-copy-link:hover {
  background-color: var(--color-border);
  color: var(--color-text-primary);
}

.btn-copy-link.copied {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

/* Modal Content Large & DMCA Content Styles */
.modal-content-lg {
  max-width: 46rem;
}

.dmca-body {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.dmca-subtitle {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.dmca-list,
.dmca-ordered-list {
  padding-left: 1.5rem;
  margin-top: 0.5rem;
  margin-bottom: 0.75rem;
}

.dmca-list li,
.dmca-ordered-list li {
  margin-bottom: 0.35rem;
}

.dmca-action-box {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-start;
}

.btn-dmca-mail {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  background-color: var(--color-primary);
  color: #ffffff !important;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  transition: background-color var(--transition-fast);
}

.btn-dmca-mail:hover {
  background-color: var(--color-primary-hover);
}

.footer-btn-link {
  background: none;
  border: none;
  padding: 0;
  color: #94a3b8;
  font-size: 0.88rem;
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-fast);
  font-family: inherit;
}

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

.text-link {
  color: var(--color-primary);
  text-decoration: underline;
}

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

/* ==========================================================================
   App Details & Technical Specifications Modal
   ========================================================================== */
.modal-app-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.modal-app-icon {
  width: 4.25rem;
  height: 4.25rem;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  background-color: var(--color-surface-subtle);
}

.modal-app-header-info {
  min-width: 0;
  flex: 1;
}

.modal-app-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background-color: var(--color-surface-subtle);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.meta-pill.developer {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-color: transparent;
}

.whats-new-box {
  background: var(--color-primary-light);
  border: 1px solid rgba(0, 85, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

.whats-new-title {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-primary);
}

.whats-new-content {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--color-text-primary);
  margin-top: 0.45rem;
  white-space: pre-wrap;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem 1rem;
  padding: 1.1rem 1.25rem;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
}

@media (min-width: 640px) {
  .specs-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.spec-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

.spec-value {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-primary);
  word-break: break-word;
}

.modal-section-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.desc-content {
  white-space: pre-wrap;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-height: 35vh;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.modal-actions-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   Version History Modal
   ========================================================================== */
.version-history-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  max-height: 60vh;
  overflow-y: auto;
  padding-right: 0.35rem;
}

.version-card {
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
}

.version-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.45rem;
}

.version-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-primary);
}

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

.badge-active {
  background-color: #dcfce7;
  color: #15803d;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.version-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.version-changelog {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
  white-space: pre-wrap;
  margin: 0;
}

.version-changelog.muted {
  font-style: italic;
  color: var(--color-text-muted);
}

.empty-state {
  text-align: center;
  color: var(--color-text-muted);
  padding: 2.5rem 1rem;
  font-size: 0.95rem;
}

/* ==========================================================================
   Smartphone & Android TV QR Code Scanner (RuStore Inspired)
   ========================================================================== */
.qr-code-section {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: fadeIn 200ms ease-out;
}

.qr-code-section.hidden {
  display: none !important;
}

.qr-code-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.85rem;
}

.qr-code-header svg {
  color: var(--color-primary);
}

.qr-code-container {
  padding: 0.85rem;
  background: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.qr-code-container svg {
  width: 170px;
  height: 170px;
  display: block;
}

.qr-code-caption {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
}

/* ==========================================================================
   Floating Toast Notifications System
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 1.15rem;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: var(--shadow-modal);
  transform: translateY(1rem);
  opacity: 0;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.success {
  border-left: 4px solid var(--color-success);
}

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

.toast.error {
  border-left: 4px solid var(--color-danger);
}

.toast-icon {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
}

.toast.success .toast-icon {
  color: var(--color-success);
}

.toast.info .toast-icon {
  color: var(--color-primary);
}

.toast.error .toast-icon {
  color: var(--color-danger);
}