/* ==========================================
 * HyperViewer Landing Page
 * Luma/Poly.cam inspired design
 * ========================================== */

/* Variables */
:root {
  /* HyperRasterizer Family Colors */
  --color-primary: #00D4FF;
  --color-primary-hover: #00B8E6;
  --color-primary-dark: #0099CC;

  /* Background */
  --color-bg-primary: #0a0e27;
  --color-bg-secondary: #0f1433;
  --color-bg-tertiary: #1a1f45;

  /* Text */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0aec0;
  --color-text-muted: #718096;

  /* Accent */
  --color-accent-purple: #7c3aed;
  --color-accent-green: #10b981;

  /* Spacing (larger for modern design) */
  --spacing-xs: 12px;
  --spacing-sm: 24px;
  --spacing-md: 48px;
  --spacing-lg: 80px;
  --spacing-xl: 120px;

  /* Radius */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;

  /* Typography */
  --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', sans-serif;
}

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

body {
  font-family: var(--font-display);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip to Content Link (Accessibility) */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary);
  color: #000;
  padding: 12px 24px;
  font-weight: 600;
  text-decoration: none;
  z-index: 9999;
  border-radius: 0 0 8px 0;
  transition: top 0.3s;
}

.skip-to-content:focus {
  top: 0;
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 39, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--spacing-sm) 0;
  transition: all 0.3s ease;
}

.header.scrolled {
  background: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(30px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  padding: 16px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #00D4FF 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.btn-nav {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-nav-secondary {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-text-primary);
  transition: all 0.2s;
}

.btn-nav-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-primary {
  padding: 10px 24px !important;
  background: var(--color-primary) !important;
  color: #000 !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
  transition: all 0.2s !important;
}

.btn-primary:hover {
  background: var(--color-primary-hover) !important;
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--spacing-xl) 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 50%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 50px;
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, #00D4FF 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.mobile-break {
  display: none;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-large {
  padding: 16px 40px;
  font-size: 1.0625rem;
}

.btn-primary {
  background: var(--color-primary);
  color: #000;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-icon {
  width: 20px;
  height: 20px;
}

.hero-trust {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.trust-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
}

/* Hero Preview */
.hero-preview {
  position: relative;
  height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-container {
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.preview-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.preview-overlay {
  position: absolute;
  bottom: 20px;
  right: 20px;
  opacity: 0;
  transition: opacity 0.3s;
}

.preview-container:hover .preview-overlay {
  opacity: 1;
}

.btn-preview {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 212, 255, 0.4);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-preview:hover {
  background: rgba(0, 212, 255, 0.2);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

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

/* Billing Period Toggle */
.billing-toggle {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-top: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50px;
  padding: 4px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.billing-btn {
  padding: 10px 24px;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 50px;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.billing-btn.active {
  background: var(--color-primary);
  color: #000;
}

.billing-btn:hover:not(.active) {
  color: var(--color-text-primary);
}

.discount-badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  background: rgba(0, 255, 136, 0.2);
  border: 1px solid rgba(0, 255, 136, 0.4);
  border-radius: 12px;
  color: #00FF88;
  font-weight: 700;
}

/* Features Section */
.features {
  padding: var(--spacing-xl) 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.feature-card {
  position: relative;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all 0.3s;
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.feature-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.feature-badge.free {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.feature-badge.pro {
  background: rgba(0, 212, 255, 0.15);
  color: var(--color-primary);
  border: 1px solid rgba(0, 212, 255, 0.3);
}

.feature-badge.business {
  background: rgba(124, 58, 237, 0.15);
  color: var(--color-accent-purple);
  border: 1px solid rgba(124, 58, 237, 0.3);
}

.feature-badge.enterprise {
  background: rgba(255, 215, 0, 0.15);
  color: #FFD700;
  border: 1px solid rgba(255, 215, 0, 0.3);
}

/* Demo Section */
.demo-section {
  padding: var(--spacing-xl) 0;
  background: rgba(255, 255, 255, 0.01);
}

.demo-viewer {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.demo-viewer iframe {
  display: block;
  width: 100%;
  border: none;
}

/* Pricing Section */
.pricing {
  padding: var(--spacing-xl) 0;
}

.pricing-table {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 1200px) {
  .pricing-table {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.pricing-card {
  position: relative;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  transition: all 0.3s;
}

.pricing-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
}

.pricing-card.recommended {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.badge-recommended {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #000;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.price {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.price span {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--spacing-md);
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.pricing-features li svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-card .btn {
  width: 100%;
  justify-content: center;
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-primary);
}

.pricing-roi {
  margin-top: 16px;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-accent-green);
  font-weight: 600;
}

/* Enterprise Tier (Full-width) */
.pricing-enterprise-wrapper {
  margin-top: var(--spacing-lg);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.pricing-card-enterprise {
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, rgba(0, 212, 255, 0.05) 100%);
  border: 2px solid;
  border-image: linear-gradient(135deg, rgba(255, 215, 0, 0.4), rgba(0, 212, 255, 0.4)) 1;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: all 0.3s;
}

.pricing-card-enterprise:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.2);
}

.enterprise-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 215, 0, 0.2);
}

.enterprise-title h3 {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, #FFD700, #00D4FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.enterprise-title .price {
  font-size: 1.5rem;
  font-weight: 700;
  color: #FFD700;
  margin: 0;
}

.enterprise-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-top: 8px;
}

.btn-enterprise {
  padding: 12px 32px;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(0, 212, 255, 0.2));
  border: 1px solid rgba(255, 215, 0, 0.4);
  border-radius: var(--radius-sm);
  color: #FFD700;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
  white-space: nowrap;
}

.btn-enterprise:hover {
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.3), rgba(0, 212, 255, 0.3));
  border-color: rgba(255, 215, 0, 0.6);
  transform: translateY(-2px);
}

.enterprise-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.enterprise-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.enterprise-feature svg {
  width: 20px;
  height: 20px;
  color: #FFD700;
  flex-shrink: 0;
  margin-top: 2px;
}

.enterprise-feature span {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.enterprise-feature strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

/* Use Cases Section */
.use-cases {
  padding: var(--spacing-xl) 0;
  background: rgba(255, 255, 255, 0.01);
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.use-case-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
  transition: all 0.3s;
}

.use-case-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
}

.use-case-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--spacing-sm);
  color: var(--color-primary);
}

.use-case-icon svg {
  width: 100%;
  height: 100%;
}

.use-case-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.use-case-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

@media (max-width: 1024px) {
  .use-case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Hyper Spinner Animations (shared across LP) */
.hyper-spinner {
  filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.15));
}

.hyper-arcs {
  animation: hyper-rotate 2.5s linear infinite;
  transform-origin: 0 0;
}

.hyper-glow {
  animation: hyper-pulse 2s ease-in-out infinite;
}

.hyper-arc-1 { animation: hyper-arc-fade 2s ease-in-out infinite; }
.hyper-arc-2 { animation: hyper-arc-fade 2s ease-in-out 0.67s infinite; }
.hyper-arc-3 { animation: hyper-arc-fade 2s ease-in-out 1.33s infinite; }

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

@keyframes hyper-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.8; }
}

@keyframes hyper-arc-fade {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* Hero placeholder spinner */
.placeholder-spinner {
  width: 80px;
  height: 80px;
  margin-bottom: 16px;
}

/* CTA spinner */
.cta-spinner {
  width: 56px;
  height: 56px;
  margin-bottom: var(--spacing-sm);
}

/* CTA Section */
.cta-section {
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.cta-section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
}

.cta-section p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

/* Footer */
.footer {
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-section h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.footer-section p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
}

.footer-section a {
  display: block;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  margin-bottom: 12px;
  transition: color 0.2s;
}

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

.footer-bottom {
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.footer-bottom p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-preview {
    height: 400px;
  }

  .feature-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-md: 32px;
    --spacing-lg: 48px;
    --spacing-xl: 64px;
  }

  .nav {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 100px 0 var(--spacing-lg);
  }

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

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

  .btn-large {
    width: 100%;
    max-width: 300px;
  }

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

  .mobile-break {
    display: block;
  }

  .hero-preview {
    height: 300px;
  }

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

  .use-case-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ==========================================
 * Mobile Navigation
 * ========================================== */

/* Hamburger Menu Button */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1100;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all 0.3s ease;
  border-radius: 2px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Navigation Menu */
.mobile-nav {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: rgba(10, 14, 39, 0.98);
  backdrop-filter: blur(20px);
  padding: var(--spacing-sm);
  flex-direction: column;
  gap: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  z-index: 999;
}

.mobile-nav.active {
  max-height: 500px;
  padding: var(--spacing-sm);
}

.mobile-nav a {
  color: var(--color-text-primary);
  text-decoration: none;
  font-size: 1.125rem;
  font-weight: 500;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: color 0.3s;
}

.mobile-nav a:last-child {
  border-bottom: none;
}

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

.mobile-nav .btn-nav {
  background: var(--color-primary);
  color: #000;
  padding: 12px 24px;
  border-radius: 12px;
  text-align: center;
  font-weight: 600;
  border-bottom: none;
  margin-top: 8px;
}

.mobile-nav .btn-nav:hover {
  background: var(--color-primary-hover);
  color: #000;
}

/* Responsive Behavior */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .nav {
    display: none;
  }

  .mobile-nav {
    display: flex;
  }
}