/* Skillia.AI 2025 Website Styles
   Design System matching app.skillia.ai
   Colors: Dark backgrounds, cyan accents, clean typography
*/

/* ============================================
   CSS VARIABLES (Design Tokens)
   ============================================ */
:root {
  /* Colors */
  --color-primary: #00bcd4;
  --color-primary-dark: #0097a7;
  --color-primary-light: #4dd0e1;
  --color-primary-glow: rgba(0, 188, 212, 0.3);

  /* Background colors */
  --color-bg-dark: #0a0a0a;
  --color-bg-darker: #050505;
  --color-bg-card: #141414;
  --color-bg-card-hover: #1a1a1a;
  --color-bg-light: #ffffff;

  /* Text colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #666666;
  --color-text-dark: #1a1a1a;

  /* Accent colors */
  --color-success: #4caf50;
  --color-warning: #ff9800;
  --color-error: #f44336;

  /* Borders */
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-light: rgba(255, 255, 255, 0.05);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px var(--color-primary-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Container */
  --container-max: 1200px;
  --container-narrow: 800px;
}

/* ============================================
   LIGHT THEME
   ============================================ */
[data-theme="light"] {
  /* Background colors */
  --color-bg-dark: #ffffff;
  --color-bg-darker: #f5f5f5;
  --color-bg-card: #f8f9fa;
  --color-bg-card-hover: #f0f0f0;

  /* Text colors */
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #4a4a4a;
  --color-text-muted: #888888;

  /* Primary colors - slightly darker for light theme visibility */
  --color-primary: #0097a7;
  --color-primary-dark: #00838f;
  --color-primary-light: #00acc1;
  --color-primary-glow: rgba(0, 151, 167, 0.2);

  /* Borders */
  --color-border: rgba(0, 0, 0, 0.1);
  --color-border-light: rgba(0, 0, 0, 0.05);

  /* Shadows - softer for light mode */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 30px var(--color-primary-glow);
}

/* Light theme specific overrides */
[data-theme="light"] .header {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .logo {
  color: #1a1a1a;
}

[data-theme="light"] .logo-ai {
  color: var(--color-primary);
}

[data-theme="light"] .logo-tagline {
  color: var(--color-text-secondary);
  border-left-color: var(--color-primary);
}

[data-theme="light"] .nav-link {
  color: #4a4a4a;
}

[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
  color: var(--color-primary);
}

[data-theme="light"] .btn-ghost {
  color: #1a1a1a;
  border-color: rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .btn-ghost:hover {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .btn-secondary {
  background: #f0f0f0;
  color: #1a1a1a;
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .btn-secondary:hover {
  background: #e0e0e0;
}

[data-theme="light"] .section-dark {
  background: #f0f0f0;
}

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

[data-theme="light"] .card:hover {
  box-shadow: var(--shadow-md);
}

[data-theme="light"] .pricing-card {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 40px var(--color-primary-glow);
}

[data-theme="light"] .footer {
  background: #f5f5f5;
  border-top-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .footer-copyright {
  color: #888888;
}

[data-theme="light"] .faq-question {
  color: #1a1a1a;
}

[data-theme="light"] .faq-item {
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .card-icon {
  background: rgba(0, 151, 167, 0.1);
  border-color: rgba(0, 151, 167, 0.2);
}

[data-theme="light"] .testimonial-avatar {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #ffffff;
}

[data-theme="light"] .comparison-table th,
[data-theme="light"] .comparison-table td {
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .comparison-table th {
  color: #666666;
}

[data-theme="light"] .mobile-menu-toggle {
  color: #1a1a1a;
}

[data-theme="light"] .form-input,
[data-theme="light"] .form-select,
[data-theme="light"] .form-textarea {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.15);
  color: #1a1a1a;
}

[data-theme="light"] .form-input:focus,
[data-theme="light"] .form-select:focus,
[data-theme="light"] .form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

/* Theme Toggle Switch */
.theme-toggle {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-left: var(--space-md);
  padding-left: var(--space-md);
  border-left: 1px solid var(--color-border);
}

.theme-toggle-btn {
  position: relative;
  width: 56px;
  height: 28px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px;
}

.theme-toggle-btn:hover {
  border-color: var(--color-primary);
}

.theme-toggle-btn svg {
  width: 14px;
  height: 14px;
  transition: opacity var(--transition-fast);
}

.theme-toggle-btn .icon-sun {
  color: #fbbf24;
  opacity: 0.4;
}

.theme-toggle-btn .icon-moon {
  color: #a0a0a0;
  opacity: 1;
}

[data-theme="light"] .theme-toggle-btn .icon-sun {
  opacity: 1;
}

[data-theme="light"] .theme-toggle-btn .icon-moon {
  opacity: 0.4;
}

.theme-toggle-slider {
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  left: 4px;
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-sm);
}

[data-theme="light"] .theme-toggle-slider {
  transform: translateX(28px);
}

/* Hide toggle on very small screens */
@media (max-width: 360px) {
  .theme-toggle {
    display: none;
  }
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

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

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

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

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

/* ============================================
   LAYOUT
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-4xl) 0;
}

.section-dark {
  background-color: var(--color-bg-darker);
}

.grid {
  display: grid;
  gap: var(--space-xl);
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.flex {
  display: flex;
}

.flex-center {
  align-items: center;
  justify-content: center;
}

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

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
  max-width: 120px;
}

.logo-text {
  display: inline;
}

.logo-ai {
  display: inline;
  color: var(--color-primary);
}

.logo-tagline {
  width: 100%;
  font-size: 0.55rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 2px;
  margin-top: 2px;
}

.logo-tagline::before,
.logo-tagline::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-top: 3px solid transparent;
  border-bottom: 3px solid transparent;
  border-left: 5px solid var(--color-primary);
}

/* Footer logo stays inline (no tagline) */
.footer-brand .logo {
  flex-wrap: nowrap;
  max-width: none;
}

.footer-brand .logo-text,
.footer-brand .logo-ai {
  display: inline;
}

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

.nav-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav-link {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.nav-cta {
  display: flex;
  gap: var(--space-md);
}

/* Mobile menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  cursor: pointer;
  padding: var(--space-sm);
}

.mobile-menu-toggle svg {
  width: 24px;
  height: 24px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg-dark);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  color: var(--color-bg-dark);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

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

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  background: rgba(0, 188, 212, 0.1);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

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

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 188, 212, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1rem;
  background: rgba(0, 188, 212, 0.1);
  border: 1px solid rgba(0, 188, 212, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-primary);
}

/* Microsoft Marketplace Badge */
.marketplace-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-base);
}

.marketplace-badge:hover {
  background: rgba(0, 188, 212, 0.1);
  border-color: rgba(0, 188, 212, 0.3);
  color: var(--color-primary);
}

.marketplace-badge:hover .marketplace-badge-icon {
  fill: var(--color-primary);
}

.marketplace-badge-icon {
  width: 16px;
  height: 16px;
  fill: var(--color-text-secondary);
  transition: fill var(--transition-base);
}

.marketplace-badge-text {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.marketplace-badge-divider {
  width: 1px;
  height: 12px;
  background: rgba(255, 255, 255, 0.2);
}

[data-theme="light"] .marketplace-badge {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.1);
  color: var(--color-text-secondary);
}

[data-theme="light"] .marketplace-badge:hover {
  background: rgba(0, 151, 167, 0.1);
  border-color: rgba(0, 151, 167, 0.3);
  color: var(--color-primary);
}

[data-theme="light"] .marketplace-badge-icon {
  fill: var(--color-text-secondary);
}

[data-theme="light"] .marketplace-badge:hover .marketplace-badge-icon {
  fill: var(--color-primary);
}

[data-theme="light"] .marketplace-badge-divider {
  background: rgba(0, 0, 0, 0.15);
}

.hero-title {
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 600px;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: var(--space-3xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.hero-stat {
  text-align: left;
}

.hero-stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.card:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 188, 212, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.card-description {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* Feature cards with highlight */
.card-feature {
  position: relative;
  overflow: hidden;
}

.card-feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

/* ============================================
   PRICING CARDS
   ============================================ */
.pricing-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
}

.pricing-card.featured {
  border-color: var(--color-primary);
  position: relative;
}

.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-bg-dark);
  padding: 0.25rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-tier {
  font-size: 0.9rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.pricing-price {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-description {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

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

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

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

.pricing-cta {
  width: 100%;
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonial-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.testimonial-quote {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--color-bg-dark);
}

.testimonial-name {
  font-weight: 600;
  color: var(--color-text-primary);
}

.testimonial-role {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ============================================
   COMPARISON TABLE
   ============================================ */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-2xl) 0;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.comparison-table td {
  color: var(--color-text-secondary);
}

.comparison-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.comparison-table .highlight {
  background: rgba(0, 188, 212, 0.1);
}

.comparison-table .highlight td {
  color: var(--color-text-primary);
}

/* ============================================
   FAQ ACCORDION
   ============================================ */
.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.1rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-base);
}

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

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

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding-bottom: var(--space-lg);
  color: var(--color-text-secondary);
}

/* ============================================
   BLOG CARDS
   ============================================ */
.blog-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.blog-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.blog-card-image {
  aspect-ratio: 16/9;
  background: var(--color-bg-darker);
  position: relative;
  overflow: hidden;
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card-content {
  padding: var(--space-xl);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.blog-card-category {
  color: var(--color-primary);
  font-weight: 500;
}

.blog-card-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.blog-card-title a {
  color: var(--color-text-primary);
}

.blog-card-title a:hover {
  color: var(--color-primary);
}

.blog-card-excerpt {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ============================================
   DEMO CARDS
   ============================================ */
.demo-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.demo-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.demo-card-video {
  aspect-ratio: 16/9;
  background: var(--color-bg-darker);
  position: relative;
  overflow: hidden;
}

.demo-card-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Fallback styles for thumbnail/link-based cards */
.demo-card-video a {
  display: block;
  width: 100%;
  height: 100%;
}

.demo-card-thumbnail {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg-darker) 0%, rgba(0, 188, 212, 0.1) 100%);
}

.demo-card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.demo-card-play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bg-dark);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-lg);
}

.demo-card-video:hover .demo-card-play-icon {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: var(--shadow-glow);
}

.demo-card-content {
  padding: var(--space-xl);
}

.demo-card-theme {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 500;
  font-size: 0.85rem;
  margin-bottom: var(--space-sm);
}

.demo-card-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.demo-card-description {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.demo-card-links {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Light theme demo card adjustments */
[data-theme="light"] .demo-card {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .demo-card:hover {
  border-color: rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .demo-card-play-icon {
  color: #ffffff;
}

/* ============================================
   CONTACT FORM
   ============================================ */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-bg-darker);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4xl) 0 var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand p {
  color: var(--color-text-muted);
  max-width: 300px;
  margin-top: var(--space-md);
}

.footer-heading {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-lg);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

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

/* Footer Trust Badge */
.footer-trust {
  display: flex;
  justify-content: center;
  padding-bottom: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
}

.footer-trust-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: all var(--transition-base);
}

.footer-trust-badge:hover {
  background: rgba(0, 188, 212, 0.1);
  border-color: rgba(0, 188, 212, 0.3);
  color: var(--color-primary);
}

.footer-trust-badge:hover .footer-trust-icon {
  fill: var(--color-primary);
}

.footer-trust-icon {
  width: 14px;
  height: 14px;
  fill: var(--color-text-muted);
  transition: fill var(--transition-base);
}

[data-theme="light"] .footer-trust-badge {
  background: rgba(0, 0, 0, 0.02);
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .footer-trust-badge:hover {
  background: rgba(0, 151, 167, 0.1);
  border-color: rgba(0, 151, 167, 0.3);
}

[data-theme="light"] .footer-trust-icon {
  fill: var(--color-text-muted);
}

[data-theme="light"] .footer-trust-badge:hover .footer-trust-icon {
  fill: var(--color-primary);
}

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

.footer-copyright {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg-dark);
}

/* ============================================
   UTILITIES
   ============================================ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  :root {
    --space-4xl: 4rem;
  }

  .nav-links {
    display: none;
  }

  .nav-cta {
    display: none;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--space-xl);
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
  }

  .pricing-card {
    padding: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .btn-lg {
    padding: 0.875rem 1.5rem;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease forwards;
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}