/* ==========================================================================
   PC USB Cleaner - Official Landing Page Stylesheet
   Theme: Modern Dark Navy, Electric Blue & Crisp White
   ========================================================================== */

:root {
  /* Default: Dark Theme */
  --bg-dark: #070c1d;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(22, 33, 62, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-border: rgba(255, 255, 255, 0.1);
  --bg-surface: #0c1533;
  --bg-surface-elevated: #111d44;
  --bg-header: rgba(7, 12, 29, 0.85);
  --bg-header-scrolled: rgba(7, 12, 29, 0.95);
  --bg-window-header: #080f24;
  --bg-window-body: #0d1633;
  --bg-scan-box: #091026;
  --bg-scan-item: rgba(255, 255, 255, 0.02);
  --bg-input: rgba(7, 12, 29, 0.7);
  --bg-input-focus: rgba(7, 12, 29, 0.95);
  --bg-input-select: #0b132f;
  --bg-metric-bar: rgba(12, 21, 51, 0.6);
  --bg-section-alt: rgba(12, 21, 51, 0.35);

  /* Brand Accents */
  --primary-blue: #0066ff;
  --primary-hover: #0052cc;
  --electric-blue: #00d2ff;
  --electric-glow: rgba(0, 210, 255, 0.35);
  --accent-cyan: #38bdf8;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;

  /* Typography Colors */
  --text-white: #ffffff;
  --text-light: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #0066ff 0%, #00d2ff 100%);
  --grad-primary-hover: linear-gradient(135deg, #0052cc 0%, #00b8e6 100%);
  --grad-surface: linear-gradient(180deg, rgba(16, 26, 61, 0.9) 0%, rgba(8, 14, 34, 0.95) 100%);
  --grad-hero: radial-gradient(circle at 50% 10%, rgba(0, 102, 255, 0.22) 0%, rgba(7, 12, 29, 0) 70%);
  --grad-glow: radial-gradient(circle at 50% 50%, rgba(0, 210, 255, 0.15) 0%, rgba(0, 0, 0, 0) 70%);

  /* Borders & Shadows */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(0, 210, 255, 0.3);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.5), 0 0 35px rgba(0, 102, 255, 0.2);
  --shadow-glow: 0 0 25px rgba(0, 210, 255, 0.4);

  /* Layout & Sizing */
  --container-max: 1220px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);

  /* Theme Icon Controls */
  --theme-sun-display: block;
  --theme-moon-display: none;
}

[data-theme="light"] {
  /* Light Theme Variables */
  --bg-dark: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.9);
  --bg-glass-border: rgba(0, 0, 0, 0.08);
  --bg-surface: #ffffff;
  --bg-surface-elevated: #edf2f7;
  --bg-header: rgba(255, 255, 255, 0.88);
  --bg-header-scrolled: rgba(255, 255, 255, 0.98);
  --bg-window-header: #e2e8f0;
  --bg-window-body: #ffffff;
  --bg-scan-box: #f8fafc;
  --bg-scan-item: #edf2f7;
  --bg-input: #ffffff;
  --bg-input-focus: #ffffff;
  --bg-input-select: #ffffff;
  --bg-metric-bar: #ffffff;
  --bg-section-alt: #f1f5f9;

  /* Typography */
  --text-white: #0f172a;
  --text-light: #1e293b;
  --text-muted: #475569;
  --text-dim: #94a3b8;

  /* Gradients */
  --grad-surface: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  --grad-hero: radial-gradient(circle at 50% 10%, rgba(0, 102, 255, 0.08) 0%, rgba(248, 250, 252, 0) 70%);

  /* Borders & Shadows */
  --border-subtle: rgba(0, 0, 0, 0.09);
  --border-accent: rgba(0, 102, 255, 0.35);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.08), 0 0 20px rgba(0, 102, 255, 0.1);
  --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.25);

  /* Theme Icon Controls */
  --theme-sun-display: none;
  --theme-moon-display: block;
}

/* ==========================================================================
   Base & Reset
   ========================================================================== */

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

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

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 102, 255, 0.25), transparent),
    radial-gradient(ellipse 60% 40% at 85% 60%, rgba(0, 210, 255, 0.08), transparent),
    radial-gradient(ellipse 50% 30% at 10% 80%, rgba(0, 102, 255, 0.12), transparent);
  pointer-events: none;
  z-index: -1;
  transition: opacity 0.3s ease;
}

[data-theme="light"] body::before {
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 102, 255, 0.1), transparent),
    radial-gradient(ellipse 60% 40% at 85% 60%, rgba(0, 210, 255, 0.05), transparent),
    radial-gradient(ellipse 50% 30% at 10% 80%, rgba(0, 102, 255, 0.06), transparent);
}

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

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

/* ==========================================================================
   Typography & Utilities
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-gradient {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-padding {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: rgba(0, 102, 255, 0.12);
  border: 1px solid rgba(0, 210, 255, 0.35);
  border-radius: var(--radius-full);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-white);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Buttons & CTA Elements
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  transition: all var(--transition-smooth);
  text-align: center;
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn-primary {
  background: var(--grad-primary);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 102, 255, 0.4);
}

.btn-primary:hover {
  background: var(--grad-primary-hover);
  box-shadow: 0 6px 25px rgba(0, 210, 255, 0.5);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-white);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  color: var(--text-white);
}

/* Buy Now Nav Button (Highlighted) */
.btn-nav-buy {
  background: var(--grad-primary);
  color: #ffffff !important;
  font-weight: 700;
  padding: 0.6rem 1.35rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 15px rgba(0, 102, 255, 0.45);
  border: 1px solid rgba(0, 210, 255, 0.4);
  transition: all var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-nav-buy:hover {
  background: var(--grad-primary-hover);
  box-shadow: 0 6px 25px rgba(0, 210, 255, 0.6);
  transform: translateY(-2px);
  color: #ffffff !important;
}

.btn-nav-buy::after {
  display: none !important;
}

/* Payment Gateway Selector */
.gateway-selection-box {
  margin: 1.5rem 0;
  text-align: left;
}

.gateway-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.gateway-select-wrapper {
  position: relative;
}

.gateway-select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-color: var(--bg-input-select);
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230066ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 16px;
  color: var(--text-white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.85rem 2.5rem 0.85rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.gateway-select:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.25);
  background-color: var(--bg-input-focus);
}

.gateway-select option {
  background-color: var(--bg-input-select);
  color: var(--text-white);
  padding: 0.75rem;
}

.gateway-notice {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-top: 0.45rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Spinner Icon */
.spin-icon {
  animation: spin 1s linear infinite;
}

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

.btn.loading {
  opacity: 0.85;
  pointer-events: none;
}


.btn-glow::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  box-shadow: 0 0 20px rgba(0, 210, 255, 0.6);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn-glow:hover::after {
  opacity: 1;
}

.btn-lg {
  padding: 1.05rem 2.2rem;
  font-size: 1.1rem;
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.875rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: var(--bg-header-scrolled);
  border-bottom-color: rgba(0, 102, 255, 0.25);
  box-shadow: var(--shadow-md);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-white);
  letter-spacing: -0.02em;
}

.nav-logo-icon {
  width: 38px;
  height: 38px;
  background: var(--grad-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(0, 102, 255, 0.45);
}

.nav-logo-icon svg {
  width: 22px;
  height: 22px;
  fill: #ffffff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 0.35rem 0;
  transition: color var(--transition-fast);
  cursor: pointer;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-white);
  font-weight: 600;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-blue);
  box-shadow: 0 0 8px rgba(0, 102, 255, 0.6);
  border-radius: var(--radius-full);
  transition: width 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-white);
  transition: all var(--transition-fast);
  padding: 0;
  flex-shrink: 0;
}

.theme-toggle-btn:hover {
  background: rgba(0, 102, 255, 0.12);
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  transform: translateY(-1px);
}

.theme-toggle-btn .sun-icon {
  display: var(--theme-sun-display);
}

.theme-toggle-btn .moon-icon {
  display: var(--theme-moon-display);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-white);
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle svg {
  width: 28px;
  height: 28px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  padding-top: 8.5rem;
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 3.5rem;
}

.hero-content {
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(0, 102, 255, 0.15);
  border: 1px solid rgba(0, 210, 255, 0.3);
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 210, 255, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 210, 255, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 210, 255, 0); }
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-white);
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-subheadline {
  font-size: 1.2rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 2.25rem;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}

.trust-item svg {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

/* ==========================================================================
   Hero Interactive Software Mockup
   ========================================================================== */

.hero-mockup-wrapper {
  position: relative;
  z-index: 2;
}

.hero-image-frame {
  background: var(--bg-window-body);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg), 0 0 35px rgba(0, 102, 255, 0.25);
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color 0.3s ease;
}

.hero-image-frame:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), 0 0 45px rgba(0, 210, 255, 0.35);
  border-color: var(--primary-blue);
}

.hero-image-container {
  background: #000000;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
}

.hero-product-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  transition: transform 0.4s ease;
}

.hero-image-frame:hover .hero-product-img {
  transform: scale(1.015);
}

.status-live-pill {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: var(--accent-green);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.status-live-pill::before {
  content: '';
  width: 6px;
  height: 6px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent-green);
}

.mockup-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 120%;
  height: 120%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(0, 102, 255, 0.25) 0%, rgba(0, 210, 255, 0.08) 50%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

.software-window {
  background: var(--bg-window-body);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(0, 102, 255, 0.15);
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-smooth), background-color 0.3s ease, border-color 0.3s ease;
}

.software-window:hover {
  transform: translateY(-3px);
  border-color: var(--primary-blue);
}

.window-header {
  background: var(--bg-window-header);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color 0.3s ease;
}

.window-controls {
  display: flex;
  gap: 0.45rem;
}

.window-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-close { background-color: #ef4444; }
.dot-min { background-color: #f59e0b; }
.dot-max { background-color: #10b981; }

.window-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.window-body {
  padding: 1.5rem;
  display: grid;
  gap: 1.25rem;
}

/* Drive Status Card */
.drive-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drive-info {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.drive-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(0, 102, 255, 0.2);
  border: 1px solid rgba(0, 210, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
}

.drive-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-white);
}

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

.drive-badge-ready {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-green);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
}

/* Scan Visualization Box */
.scan-display {
  background: var(--bg-scan-box);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  text-align: center;
  position: relative;
  transition: background-color 0.3s ease;
}

.scan-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.progress-bar-container {
  width: 100%;
  height: 8px;
  background: var(--bg-glass-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 1rem;
}

.progress-bar-fill {
  width: 78%;
  height: 100%;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px rgba(0, 210, 255, 0.6);
  transition: width 0.6s ease;
}

.scanned-items-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  text-align: left;
}

.scan-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-scan-item);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  transition: background-color 0.3s ease;
}

.scan-item-name {
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.scan-item-size {
  color: var(--accent-cyan);
  font-weight: 600;
}

.window-footer-cta {
  display: flex;
  gap: 0.75rem;
}

.window-footer-cta .btn {
  flex: 1;
  font-size: 0.9rem;
  padding: 0.65rem;
}

/* ==========================================================================
   Trust & Metrics Bar
   ========================================================================== */

.metrics-bar {
  background: var(--bg-metric-bar);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 2.25rem 0;
  transition: background-color 0.3s ease;
}

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

.metric-number {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.metric-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: center;
}

.about-image-card {
  background: var(--grad-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  box-shadow: var(--shadow-md);
}

.about-feature-box {
  background: rgba(0, 102, 255, 0.08);
  border: 1px solid rgba(0, 210, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  display: flex;
  gap: 1.2rem;
}

.about-feature-box:last-child {
  margin-bottom: 0;
}

.about-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.4);
}

.about-icon svg {
  width: 24px;
  height: 24px;
  color: #fff;
}

.about-text h4 {
  font-size: 1.1rem;
  color: var(--text-white);
  margin-bottom: 0.35rem;
}

.about-text p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.about-content h2 {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-white);
  margin-bottom: 1.5rem;
}

.about-content p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

.about-checklist {
  margin: 1.75rem 0 2rem 0;
  display: grid;
  gap: 0.85rem;
}

.about-check-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-light);
}

.check-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid rgba(16, 185, 129, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-green);
  flex-shrink: 0;
}

.check-icon svg {
  width: 13px;
  height: 13px;
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.2rem;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  border-color: rgba(0, 210, 255, 0.4);
  box-shadow: var(--shadow-lg);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--grad-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: rgba(0, 102, 255, 0.12);
  border: 1px solid rgba(0, 210, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--accent-cyan);
  transition: all var(--transition-smooth);
}

.feature-card:hover .feature-icon-wrapper {
  background: var(--grad-primary);
  color: #ffffff;
  box-shadow: 0 0 20px rgba(0, 210, 255, 0.5);
  transform: scale(1.05);
}

.feature-icon-wrapper svg {
  width: 28px;
  height: 28px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.75rem;
}

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

/* ==========================================================================
   How It Works Section
   ========================================================================== */

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

.step-card {
  background: var(--grad-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  position: relative;
  text-align: center;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--grad-primary);
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
  box-shadow: 0 0 18px rgba(0, 102, 255, 0.5);
}

.step-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.75rem;
}

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

/* ==========================================================================
   Pricing & Purchase Section
   ========================================================================== */

.pricing-section {
  position: relative;
}

.pricing-cards-container {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  max-width: 960px;
  margin: 0 auto;
}

.pricing-card {
  flex: 1 1 420px;
  max-width: 660px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.75rem 2.5rem;
  position: relative;
  backdrop-filter: blur(14px);
  transition: all var(--transition-smooth);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(16, 28, 68, 0.95) 0%, rgba(9, 16, 40, 0.98) 100%);
  border: 2px solid rgba(0, 210, 255, 0.6);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 102, 255, 0.35);
  transform: translateY(-8px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--grad-primary);
  color: #fff;
  padding: 0.3rem 1.2rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 15px rgba(0, 102, 255, 0.5);
}

.pricing-header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.pricing-plan-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.5rem;
}

.pricing-plan-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.price-box {
  margin: 1.5rem 0 0.5rem 0;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.5rem;
}

.price-currency {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-white);
}

.price-amount {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1;
}

.price-original {
  font-size: 1.25rem;
  color: var(--text-dim);
  text-decoration: line-through;
  margin-left: 0.25rem;
}

.price-type {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.pricing-features-list {
  display: grid;
  gap: 1rem;
  margin-bottom: 2.25rem;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-light);
}

.pricing-cta-wrapper {
  text-align: center;
}

.pricing-cta-wrapper .btn {
  width: 100%;
}

.payment-trust-bar {
  margin-top: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.payment-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
  opacity: 0.75;
}

.payment-badge-icon {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-light);
  letter-spacing: 0.03em;
}

/* ==========================================================================
   Enquiry / Contact Form Section
   ========================================================================== */

.contact-section {
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3.5rem;
  align-items: flex-start;
}

.contact-info-card {
  background: var(--grad-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.contact-info-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.75rem;
}

.contact-info-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.contact-channels {
  display: grid;
  gap: 1.5rem;
}

.contact-channel-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon-bubble {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0, 102, 255, 0.15);
  border: 1px solid rgba(0, 210, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.contact-icon-bubble svg {
  width: 20px;
  height: 20px;
}

.channel-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.channel-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-white);
  word-break: break-all;
}

/* Form Styles */
.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.75rem 2.5rem;
  backdrop-filter: blur(14px);
}

.form-group {
  margin-bottom: 1.4rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.form-label .required {
  color: var(--accent-red);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.15rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-white);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.2);
  background: var(--bg-input-focus);
}

.form-control::placeholder {
  color: var(--text-dim);
}

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

.form-alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
  display: none;
}

.form-alert.success {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34d399;
}

.form-alert.error {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #f87171;
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

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

.faq-item:hover {
  border-color: rgba(0, 210, 255, 0.3);
}

.faq-question {
  width: 100%;
  padding: 1.35rem 1.6rem;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--accent-cyan);
  transition: transform var(--transition-smooth);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-smooth), padding var(--transition-smooth);
  padding: 0 1.6rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 1.4rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: #050915;
  border-top: 1px solid var(--border-subtle);
  padding-top: 4.5rem;
  padding-bottom: 2.5rem;
  color: var(--text-muted);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 1.25rem;
}

.footer-links-list {
  display: grid;
  gap: 0.65rem;
}

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

.footer-links-list a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}

.footer-sys-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

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

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

  .hero-trust-list {
    justify-content: center;
  }

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

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

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

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

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 2.35rem;
  }

  .navbar {
    height: 70px;
  }

  .nav-links {
    display: flex;
    gap: 1.1rem;
  }

  .nav-link {
    font-size: 0.9rem;
  }

  .btn-nav-buy {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }

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

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

  .pricing-cards-container {
    flex-direction: column;
    align-items: center;
  }

  .pricing-card.featured {
    transform: none;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

/* ==========================================================================
   Light Mode Overrides & Component Polish
   ========================================================================== */

[data-theme="light"] .pricing-card.featured {
  background: #ffffff;
  border: 2px solid var(--primary-blue);
  box-shadow: 0 15px 35px rgba(0, 102, 255, 0.12);
}

[data-theme="light"] .about-image-card {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .about-feature-box {
  background: rgba(0, 102, 255, 0.04);
  border-color: rgba(0, 102, 255, 0.15);
}

[data-theme="light"] .btn-secondary {
  background: #ffffff;
  color: #0f172a;
  border-color: rgba(0, 0, 0, 0.15);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .btn-secondary:hover {
  background: #f1f5f9;
  border-color: rgba(0, 0, 0, 0.25);
  color: #0f172a;
}

[data-theme="light"] .section-badge {
  background: rgba(0, 102, 255, 0.08);
  border-color: rgba(0, 102, 255, 0.25);
  color: var(--primary-blue);
}

[data-theme="light"] .hero-badge {
  background: rgba(0, 102, 255, 0.08);
  border-color: rgba(0, 102, 255, 0.2);
  color: var(--primary-blue);
}

[data-theme="light"] .feature-icon-wrapper {
  background: rgba(0, 102, 255, 0.08);
  border-color: rgba(0, 102, 255, 0.2);
  color: var(--primary-blue);
}

[data-theme="light"] .step-card {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: var(--shadow-sm);
}

[data-theme="light"] .drive-card {
  background: #f8fafc;
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .payment-badge-icon {
  background: rgba(0, 0, 0, 0.05);
  color: #1e293b;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .contact-info-card {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .faq-item {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .faq-item:hover {
  border-color: var(--primary-blue);
}

@media (max-width: 600px) {
  .nav-links {
    gap: 0.75rem;
  }
  .nav-link {
    font-size: 0.8rem;
  }
  .btn-nav-buy {
    padding: 0.45rem 0.8rem;
    font-size: 0.8rem;
  }
  .theme-toggle-btn {
    width: 34px;
    height: 34px;
  }
}