/* ==========================================================================
   PrecisionOps Website - Design System
   Matches the PrecisionOps app Material 3 dark theme
   ========================================================================== */

/* CSS Variables - PrecisionOps Brand */
:root {
  /* Brand Colors */
  --primary: #1E40AF;
  --primary-light: #3B82F6;
  --primary-dark: #1E3A5F;

  /* Status Colors */
  --success: #059669;
  --success-light: #10B981;
  --warning: #D97706;
  --error: #DC2626;
  --info: #0284C7;

  /* Surfaces - Dark Theme */
  --bg-base: #0a0a0f;
  --bg-surface: #111118;
  --bg-elevated: #1a1a24;
  --bg-card: #16161f;
  --bg-hover: #1f1f2a;

  /* Text */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Borders */
  --border: #2a2a3a;
  --border-light: #3a3a4a;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  --gradient-surface: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-base) 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);

  /* 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;

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

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --max-width: 1200px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-base);
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }

p {
  color: var(--text-secondary);
}

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

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

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

section {
  padding: var(--space-3xl) 0;
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  object-fit: contain;
}

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

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

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

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

.btn-large {
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
}

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

@media (max-width: 768px) {
  .nav-links, .nav-cta {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .nav.open .nav-links,
  .nav.open .nav-cta {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: var(--space-lg);
  }
}

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

.hero {
  padding-top: calc(var(--header-height) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 150%;
  height: 100%;
  background: radial-gradient(ellipse at center top, rgba(30, 64, 175, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: rgba(5, 150, 105, 0.15);
  border: 1px solid rgba(5, 150, 105, 0.3);
  border-radius: var(--radius-xl);
  color: var(--success-light);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: var(--space-lg);
}

.hero h1 {
  max-width: 800px;
  margin: 0 auto var(--space-lg);
}

.hero-tagline {
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.hero-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero-links a {
  color: var(--text-secondary);
}

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

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

.features {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.section-header p {
  margin-top: var(--space-md);
}

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

.feature-card {
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.feature-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(30, 64, 175, 0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--primary-light);
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
}

.feature-card p {
  font-size: 0.9rem;
}

/* Feature category tabs */
.feature-categories {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.feature-tab {
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.feature-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.feature-card.hidden {
  display: none;
}

/* ==========================================================================
   Pricing
   ========================================================================== */

.pricing {
  background: var(--bg-base);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.pricing-badge {
  position: absolute;
  top: calc(var(--space-md) * -1);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-xs) var(--space-md);
  background: var(--gradient-primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-xl);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.pricing-card .team-size {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

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

.price-per-seat {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.price-per-seat span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pricing-card ul {
  list-style: none;
  margin: var(--space-lg) 0;
}

.pricing-card li {
  padding: var(--space-sm) 0;
  padding-left: var(--space-lg);
  position: relative;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pricing-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2310B981'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z'/%3E%3C/svg%3E") center/contain no-repeat;
}

.pricing-example {
  padding: var(--space-md);
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.tier-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

/* Promo Banner */
.promo-banner {
  padding: var(--space-xl);
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.15) 0%, rgba(59, 130, 246, 0.15) 100%);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-lg);
  text-align: center;
  margin-top: var(--space-2xl);
}

.promo-banner.success {
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.15) 0%, rgba(16, 185, 129, 0.15) 100%);
  border-color: rgba(16, 185, 129, 0.3);
}

.promo-banner h3 {
  color: var(--primary-light);
  margin-bottom: var(--space-sm);
}

.promo-banner.success h3 {
  color: var(--success-light);
}

.promo-banner p {
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================================================
   Download
   ========================================================================== */

.download {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  max-width: 800px;
  margin: 0 auto var(--space-xl);
}

.download-card {
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-base);
}

.download-card:hover {
  border-color: var(--primary);
}

.download-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-md);
  color: var(--primary-light);
}

.download-card h3 {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.download-card p {
  font-size: 0.85rem;
  margin-bottom: var(--space-md);
}

.install-note {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-lg);
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.3);
  border-radius: var(--radius-md);
  text-align: center;
}

.install-note h4 {
  color: var(--warning);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.install-note p {
  font-size: 0.85rem;
}

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

.footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border);
  background: var(--bg-base);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

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

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

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

/* ==========================================================================
   Utilities
   ========================================================================== */

.text-center { text-align: center; }
.text-primary { color: var(--primary-light); }
.text-success { color: var(--success-light); }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

/* Smooth scroll offset for anchors */
:target {
  scroll-margin-top: calc(var(--header-height) + var(--space-lg));
}

/* Selection */
::selection {
  background: var(--primary);
  color: white;
}

/* Focus styles */
:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}