/* ==========================================================================
   VBC Official Website Stylesheet
   Design Standard: Modern Dark Glassmorphism & Micro-animations
   ========================================================================== */

:root {
  --bg-dark: #08090a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-light: rgba(255, 255, 255, 0.15);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --accent-orange: #ff5500;
  --accent-orange-glow: rgba(255, 85, 0, 0.35);
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-purple: #8b5cf6;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  --font-family: 'Plus Jakarta Sans', 'Outfit', system-ui, -apple-system, sans-serif;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body.dark-theme {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --------------------------------------------------------------------------
   Navbar Styles
   -------------------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(8, 9, 10, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.brand-text {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-name {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
}

.brand-badge {
  font-size: 11px;
  font-weight: 700;
  background: rgba(255, 85, 0, 0.15);
  color: var(--accent-orange);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 85, 0, 0.3);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
}

.nav-links a:hover {
  color: var(--text-main);
  transition: color 0.2s ease;
}

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

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn-primary {
  background: linear-gradient(135deg, #ff6b1a 0%, #e04400 100%);
  color: #ffffff;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 20px var(--accent-orange-glow);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(255, 85, 0, 0.5);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-glass-light);
  color: var(--text-main);
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-large {
  padding: 14px 28px;
  border-radius: var(--radius-md);
}

.btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.btn-title {
  font-size: 15px;
  line-height: 1.2;
}

.btn-sub {
  font-size: 11px;
  opacity: 0.85;
  font-weight: 500;
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding-top: 140px;
  padding-bottom: 80px;
}

.hero-bg-glow {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 85, 0, 0.12) 0%, rgba(59, 130, 246, 0.05) 50%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
}

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

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass-light);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-orange);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-orange);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #ff8844 50%, #ff5500 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 36px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-specs-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border-glass);
}

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

.spec-label {
  font-size: 12px;
  color: var(--text-dim);
}

.spec-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
}

.spec-divider {
  width: 1px;
  height: 24px;
  background: var(--border-glass);
}

.media-card-frame {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glass-light);
  border-radius: var(--radius-lg);
  padding: 12px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  transition: transform 0.4s ease;
}

.media-card-frame:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.2);
}

.hero-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  display: block;
}

.hero-caption {
  padding: 12px 8px 4px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

/* --------------------------------------------------------------------------
   Features Matrix Section
   -------------------------------------------------------------------------- */
.features-section {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg-dark) 0%, #0d0f12 100%);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass-light);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 20px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Workflow Steps Section
   -------------------------------------------------------------------------- */
.workflow-section {
  padding: 90px 0;
  border-top: 1px solid var(--border-glass);
}

.steps-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.step-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  position: relative;
}

.step-num {
  font-size: 44px;
  font-weight: 800;
  color: var(--accent-orange);
  opacity: 0.4;
  margin-bottom: 16px;
  font-family: 'Outfit', sans-serif;
}

.step-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Dual Showcase Cards
   -------------------------------------------------------------------------- */
.hero-dual-showcase {
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: center;
}

.showcase-card {
  background: #0d0f12;
  border: 1px solid var(--border-glass-light);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.showcase-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 85, 0, 0.4);
}

.mac-card {
  flex: 1.2;
}

.phone-card {
  flex: 0.8;
  max-width: 300px;
}

.card-header-bar {
  background: rgba(255, 255, 255, 0.04);
  padding: 8px 14px;
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-dim);
}

.mac-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.mac-dot.red { background: #ff5f56; }
.mac-dot.yellow { background: #ffbd2e; }
.mac-dot.green { background: #27c93f; }

.phone-time {
  font-weight: 700;
  color: var(--text-muted);
}

.card-bar-title {
  margin-left: auto;
}

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

/* --------------------------------------------------------------------------
   Sponsor Section
   -------------------------------------------------------------------------- */
.sponsor-section {
  padding: 80px 0;
}

.sponsor-card {
  background: linear-gradient(135deg, rgba(255, 85, 0, 0.08) 0%, rgba(20, 22, 28, 0.9) 100%);
  border: 1px solid rgba(255, 85, 0, 0.25);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
}

.sponsor-tag {
  display: inline-block;
  background: rgba(255, 85, 0, 0.2);
  color: var(--accent-orange);
  font-weight: 700;
  font-size: 13px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.sponsor-info h2 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 14px;
}

.sponsor-info p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 600px;
}

.sponsor-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.badge-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--text-main);
}

.sponsor-qr-box {
  background: #ffffff;
  padding: 16px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.sponsor-qr-img {
  width: 180px;
  height: 180px;
  display: block;
  border-radius: 8px;
}

.sponsor-qr-tip {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: #333333;
  margin-top: 10px;
}
.install-section {
  padding: 80px 0;
}

.install-card {
  background: linear-gradient(135deg, rgba(255, 85, 0, 0.05) 0%, rgba(15, 17, 21, 0.8) 100%);
  border: 1px solid var(--border-glass-light);
  border-radius: var(--radius-lg);
  padding: 48px;
}

.install-header {
  margin-bottom: 36px;
}

.install-header h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}

.install-header p {
  color: var(--text-muted);
}

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

.install-box {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 24px;
}

.install-box h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 12px;
}

.install-box p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.path-badge {
  display: inline-block;
  background: rgba(255, 85, 0, 0.15);
  border: 1px solid rgba(255, 85, 0, 0.3);
  color: #ffa372;
  font-weight: 700;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.code-block {
  background: #000;
  border: 1px solid var(--border-glass);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: monospace;
  font-size: 13px;
  color: #ff9d66;
}

.copy-btn {
  background: var(--bg-card-hover);
  border: 1px solid var(--border-glass-light);
  color: var(--text-main);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background 0.2s;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* --------------------------------------------------------------------------
   Privacy Section
   -------------------------------------------------------------------------- */
.privacy-section {
  padding: 60px 0 100px;
}

.privacy-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}

.privacy-content h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 12px;
}

.privacy-content p {
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 24px;
}

.privacy-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-weight: 600;
  color: var(--accent-orange);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: #040506;
  border-top: 1px solid var(--border-glass);
  padding: 60px 0 30px;
  font-size: 14px;
  color: var(--text-dim);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  margin-bottom: 40px;
}

.footer-brand .brand-name {
  font-size: 16px;
}

.footer-tagline {
  margin-top: 12px;
  font-size: 13px;
  max-width: 320px;
}

.footer-nav {
  display: flex;
  gap: 60px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  color: var(--text-main);
  font-size: 14px;
  margin-bottom: 6px;
}

.footer-col a:hover {
  color: var(--text-main);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 24px;
  text-align: center;
  font-size: 12px;
}

/* --------------------------------------------------------------------------
   Responsive Layout
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-title {
    font-size: 38px;
  }
  .features-grid,
  .steps-wrapper,
  .install-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
  .footer-container {
    flex-direction: column;
    gap: 32px;
  }
}