/* ============================================
   CommandBridge Marketing Website
   Design System & Styles
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
  /* Primary Colors - Deep Navy/Slate */
  --color-primary-900: #0f172a;
  --color-primary-800: #1e293b;
  --color-primary-700: #334155;
  --color-primary-600: #475569;
  --color-primary-500: #64748b;

  /* Neutral Grays */
  --color-neutral-100: #f8fafc;
  --color-neutral-200: #e2e8f0;
  --color-neutral-300: #cbd5e1;
  --color-neutral-400: #94a3b8;
  --color-neutral-500: #64748b;
  --color-neutral-600: #475569;
  --color-neutral-700: #334155;
  --color-neutral-800: #1e293b;
  --color-neutral-900: #0f172a;

  /* Safety/Accent Colors */
  --color-accent-amber: #f59e0b;
  --color-accent-amber-dark: #d97706;
  --color-accent-green: #10b981;
  --color-accent-green-dark: #059669;
  --color-accent-blue: #3b82f6;
  --color-accent-blue-dark: #2563eb;

  /* Semantic Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  /* Background & Surface */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;

  /* Text Colors */
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-tertiary: #64748b;
  --color-text-inverse: #ffffff;
  --color-text-link: #2563eb;
  --color-text-link-hover: #1d4ed8;

  /* Border Colors */
  --color-border: #e2e8f0;
  --color-border-strong: #cbd5e1;

  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, 'Andale Mono', monospace;

  /* Font Sizes */
  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.25rem;     /* 20px */
  --font-size-2xl: 1.5rem;     /* 24px */
  --font-size-3xl: 1.875rem;   /* 30px */
  --font-size-4xl: 2.25rem;    /* 36px */
  --font-size-5xl: 3rem;       /* 48px */
  --font-size-6xl: 3.75rem;    /* 60px */

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Spacing */
  --spacing-1: 0.25rem;   /* 4px */
  --spacing-2: 0.5rem;    /* 8px */
  --spacing-3: 0.75rem;   /* 12px */
  --spacing-4: 1rem;      /* 16px */
  --spacing-5: 1.25rem;   /* 20px */
  --spacing-6: 1.5rem;    /* 24px */
  --spacing-8: 2rem;      /* 32px */
  --spacing-10: 2.5rem;   /* 40px */
  --spacing-12: 3rem;     /* 48px */
  --spacing-16: 4rem;     /* 64px */
  --spacing-20: 5rem;     /* 80px */
  --spacing-24: 6rem;     /* 96px */

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Layout */
  --container-max: 1280px;
  --header-height: 72px;

  /* Focus Ring */
  --focus-ring: 0 0 0 3px rgba(59, 130, 246, 0.5);
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-surface: #1e293b;
  --color-surface-elevated: #334155;

  --color-text-primary: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
  --color-text-inverse: #0f172a;
  --color-text-link: #60a5fa;
  --color-text-link-hover: #93c5fd;

  --color-border: #334155;
  --color-border-strong: #475569;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

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

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

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

a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-4);
}

p:last-child {
  margin-bottom: 0;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

.text-balance {
  text-wrap: balance;
}

/* ============================================
   Skip Link (Accessibility)
   ============================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--spacing-4);
  z-index: 9999;
  padding: var(--spacing-3) var(--spacing-6);
  background-color: var(--color-primary-800);
  color: var(--color-neutral-100);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--spacing-4);
}

[data-theme="dark"] .skip-link {
  background-color: var(--color-accent-amber);
  color: var(--color-primary-900);
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--spacing-8);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
}

.logo-link:hover {
  color: var(--color-text-primary);
}

.logo-link img {
  height: 40px;
  width: auto;
}

/* Main Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-2) var(--spacing-4);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.nav-link[aria-current="page"] {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.theme-toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  cursor: pointer;
  border-radius: var(--radius-md);
}

.mobile-menu-toggle:hover {
  background-color: var(--color-bg-tertiary);
}

.mobile-menu-toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: currentColor;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

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

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

/* Mobile Nav CTA - hidden on desktop */
.mobile-nav-cta {
  display: none;
}

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

/* Mobile Navigation */
@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-2);
    padding: var(--spacing-6);
    background-color: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform var(--transition-slow), visibility var(--transition-slow);
    overflow-y: auto;
  }

  .main-nav.is-open {
    transform: translateX(0);
    visibility: visible;
  }

  .nav-link {
    padding: var(--spacing-4);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
  }

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

  .header-actions .btn-primary {
    display: none;
  }

  .mobile-nav-cta {
    display: block;
    margin-top: auto;
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-border);
  }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-base);
}

.btn-primary {
  background-color: var(--color-primary-800);
  border-color: var(--color-primary-800);
  color: var(--color-text-inverse);
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
  border-color: var(--color-primary-700);
  color: var(--color-text-inverse);
}

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

.btn-secondary:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-primary-600);
  color: var(--color-text-primary);
}

.btn-accent {
  background-color: var(--color-accent-amber);
  border-color: var(--color-accent-amber);
  color: var(--color-primary-900);
}

.btn-accent:hover {
  background-color: var(--color-accent-amber-dark);
  border-color: var(--color-accent-amber-dark);
  color: var(--color-primary-900);
}

[data-theme="dark"] .btn-primary {
  background-color: var(--color-neutral-100);
  border-color: var(--color-neutral-100);
  color: var(--color-primary-900);
}

[data-theme="dark"] .btn-primary:hover {
  background-color: var(--color-neutral-200);
  border-color: var(--color-neutral-200);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  padding: var(--spacing-20) 0 var(--spacing-24);
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
  overflow: hidden;
}

/* Animated gradient orbs */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 40% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
  animation: heroGradientShift 20s ease-in-out infinite;
  pointer-events: none;
}

/* Subtle grid pattern overlay */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

[data-theme="dark"] .hero::after {
  background-image:
    linear-gradient(rgba(248, 250, 252, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(248, 250, 252, 0.03) 1px, transparent 1px);
}

@keyframes heroGradientShift {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(2%, 1%) rotate(1deg);
  }
  50% {
    transform: translate(0, 2%) rotate(0deg);
  }
  75% {
    transform: translate(-2%, 1%) rotate(-1deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero::before {
    animation: none;
  }
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  margin-bottom: var(--spacing-6);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-accent-green);
  border-radius: var(--radius-full);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
  }
  50% {
    opacity: 0.8;
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-badge-dot {
    animation: none;
  }
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
  margin-bottom: var(--spacing-4);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary-600);
  margin-bottom: var(--spacing-6);
}

[data-theme="dark"] .hero-subtitle {
  color: var(--color-accent-amber);
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 540px;
  margin-bottom: var(--spacing-8);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.hero-visual {
  position: relative;
  z-index: 1;
}

.hero-image-container {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.hero-image-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: var(--spacing-8);
  background: linear-gradient(135deg, var(--color-primary-800) 0%, var(--color-primary-900) 100%);
  color: var(--color-neutral-100);
}

.hero-image-placeholder svg {
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-4);
  opacity: 0.8;
}

.hero-image-placeholder span {
  font-size: var(--font-size-sm);
  opacity: 0.7;
}

[data-theme="dark"] .hero-image-placeholder {
  background: linear-gradient(135deg, var(--color-primary-700) 0%, var(--color-primary-800) 100%);
}

/* Hero Responsive */
@media (max-width: 1024px) {
  .hero {
    padding: var(--spacing-16) 0;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
    text-align: center;
  }

  .hero-title {
    font-size: var(--font-size-5xl);
  }

  .hero-description {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-visual {
    max-width: 600px;
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-xl);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

/* ============================================
   Section Styles
   ============================================ */
.section {
  padding: var(--spacing-20) 0;
}

.section-sm {
  padding: var(--spacing-12) 0;
}

.section-lg {
  padding: var(--spacing-24) 0;
}

.section-alt {
  background-color: var(--color-bg-secondary);
}

.section-dark {
  background-color: var(--color-primary-900);
  color: var(--color-neutral-100);
}

.section-dark .section-label {
  color: var(--color-accent-amber);
}

.section-dark .section-title,
.section-dark .section-subtitle,
.section-dark h3,
.section-dark h4 {
  color: var(--color-neutral-100);
}

.section-dark .section-description,
.section-dark p {
  color: var(--color-neutral-300);
}

/* Section Dark - Dark Mode (ensure visibility) */
[data-theme="dark"] .section-dark {
  background-color: var(--color-primary-800);
}

[data-theme="dark"] .section-dark .section-label {
  color: var(--color-accent-amber);
}

[data-theme="dark"] .section-dark .section-title,
[data-theme="dark"] .section-dark .section-subtitle,
[data-theme="dark"] .section-dark h3,
[data-theme="dark"] .section-dark h4 {
  color: var(--color-neutral-100);
}

[data-theme="dark"] .section-dark p {
  color: var(--color-neutral-300);
}

.section-header {
  max-width: 720px;
  margin: 0 auto var(--spacing-16);
  text-align: center;
}

.section-header-left {
  text-align: left;
  margin-left: 0;
}

.section-label {
  display: inline-block;
  padding: var(--spacing-1) var(--spacing-3);
  margin-bottom: var(--spacing-4);
  background-color: var(--color-accent-amber);
  color: var(--color-primary-900);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

@media (max-width: 768px) {
  .section {
    padding: var(--spacing-16) 0;
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .section-subtitle {
    font-size: var(--font-size-lg);
  }
}

/* ============================================
   Feature Cards
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

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

@media (max-width: 640px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  padding: var(--spacing-8);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  .feature-card:hover {
    transform: none;
  }
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-5);
  background-color: var(--color-primary-800);
  border-radius: var(--radius-lg);
  color: var(--color-neutral-100);
}

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

.feature-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-3);
}

.feature-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.feature-list {
  margin-top: var(--spacing-4);
}

.feature-list li {
  position: relative;
  padding-left: var(--spacing-6);
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent-amber);
  border-radius: var(--radius-full);
}

/* Feature Cards - Dark Mode */
[data-theme="dark"] .feature-card {
  background-color: var(--color-primary-800);
  border-color: var(--color-primary-600);
}

[data-theme="dark"] .feature-card:hover {
  border-color: var(--color-accent-amber);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .feature-icon {
  background-color: var(--color-accent-amber);
  color: var(--color-primary-900);
}

[data-theme="dark"] .feature-title {
  color: var(--color-neutral-100);
}

[data-theme="dark"] .feature-description,
[data-theme="dark"] .feature-list li {
  color: var(--color-neutral-300);
}

/* Section Alt - Dark Mode */
[data-theme="dark"] .section-alt {
  background-color: var(--color-primary-900);
}

/* ============================================
   Solutions Section
   ============================================ */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-6);
}

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

.solution-card {
  display: flex;
  gap: var(--spacing-5);
  padding: var(--spacing-6);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.solution-card:hover {
  border-color: var(--color-primary-600);
  box-shadow: var(--shadow-md);
}

.solution-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  color: var(--color-primary-700);
}

[data-theme="dark"] .solution-icon {
  background-color: var(--color-accent-amber);
  color: var(--color-primary-900);
}

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

.solution-content {
  flex: 1;
}

.solution-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
}

.solution-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* Solution Cards - Dark Mode */
[data-theme="dark"] .solution-card {
  background-color: var(--color-primary-800);
  border-color: var(--color-primary-600);
}

[data-theme="dark"] .solution-card:hover {
  border-color: var(--color-accent-amber);
}

[data-theme="dark"] .solution-icon {
  background-color: var(--color-accent-amber);
  color: var(--color-primary-900);
}

[data-theme="dark"] .solution-title {
  color: var(--color-neutral-100);
}

[data-theme="dark"] .solution-description {
  color: var(--color-neutral-300);
}

/* ============================================
   Security Section
   ============================================ */
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
}

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

@media (max-width: 640px) {
  .security-grid {
    grid-template-columns: 1fr;
  }
}

.security-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  padding: var(--spacing-5);
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
}

.security-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-accent-green);
  border-radius: var(--radius-md);
  color: var(--color-primary-900);
}

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

.security-text h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-1);
}

.security-text p {
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* Security Section - Dark Mode */
[data-theme="dark"] .security-item {
  background-color: var(--color-primary-800);
  border: 1px solid var(--color-primary-600);
}

[data-theme="dark"] .security-item:hover {
  border-color: var(--color-accent-green);
}

[data-theme="dark"] .security-text h4 {
  color: var(--color-neutral-100);
}

[data-theme="dark"] .security-text p {
  color: var(--color-neutral-300);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-800) 0%, var(--color-primary-900) 100%);
  color: var(--color-neutral-100);
}

.cta-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.cta-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
  color: var(--color-neutral-100);
}

.cta-description {
  font-size: var(--font-size-lg);
  color: var(--color-neutral-300);
  margin-bottom: var(--spacing-8);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-4);
}

@media (max-width: 640px) {
  .cta-title {
    font-size: var(--font-size-3xl);
  }

  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* CTA Section - Dark Mode */
[data-theme="dark"] .cta-section {
  background: linear-gradient(135deg, var(--color-primary-700) 0%, var(--color-primary-800) 100%);
}

[data-theme="dark"] .cta-title {
  color: var(--color-neutral-100);
}

[data-theme="dark"] .cta-description {
  color: var(--color-neutral-300);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-5);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-label-required::after {
  content: ' *';
  color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-border-strong);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  box-shadow: var(--focus-ring);
}

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

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
  border-color: var(--color-error);
}

.form-input.is-invalid:focus,
.form-select.is-invalid:focus,
.form-textarea.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.3);
}

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

.form-error {
  display: none;
  margin-top: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.form-group.has-error .form-error {
  display: block;
}

.form-hint {
  margin-top: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* Contact Form Layout */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing-8);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-5);
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-submit {
  margin-top: var(--spacing-6);
}

.form-submit .btn {
  width: 100%;
}

.form-success {
  display: none;
  padding: var(--spacing-6);
  text-align: center;
}

.form-success.is-visible {
  display: block;
}

.form-success-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-4);
  background-color: var(--color-accent-green);
  border-radius: var(--radius-full);
  color: white;
}

.form-success-icon svg {
  width: 32px;
  height: 32px;
}

.form-success h3 {
  margin-bottom: var(--spacing-2);
}

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

/* ============================================
   Page Header
   ============================================ */
.page-header {
  padding: var(--spacing-16) 0;
  background-color: var(--color-bg-secondary);
  text-align: center;
}

.page-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.page-description {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .page-header {
    padding: var(--spacing-12) 0;
  }

  .page-title {
    font-size: var(--font-size-4xl);
  }

  .page-description {
    font-size: var(--font-size-lg);
  }
}

/* ============================================
   Content Pages
   ============================================ */
.content-section {
  padding: var(--spacing-16) 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.content-grid.reverse {
  direction: rtl;
}

.content-grid.reverse > * {
  direction: ltr;
}

@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-10);
  }

  .content-grid.reverse {
    direction: ltr;
  }
}

.content-text h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-4);
}

.content-text p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.content-visual {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-tertiary);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  padding: var(--spacing-16) 0 var(--spacing-8);
  background-color: var(--color-primary-900);
  color: var(--color-neutral-300);
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--spacing-12);
  padding-bottom: var(--spacing-12);
  border-bottom: 1px solid var(--color-primary-700);
}

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

@media (max-width: 640px) {
  .footer-main {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }
}

.footer-brand {
  max-width: 320px;
}

.footer-logo {
  display: inline-flex;
  margin-bottom: var(--spacing-4);
}

.footer-logo img {
  height: 36px;
  width: auto;
}

.footer-tagline {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

.footer-column h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-100);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-400);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-neutral-100);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-4);
  padding-top: var(--spacing-8);
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-500);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-6);
}

.footer-legal a {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-500);
}

.footer-legal a:hover {
  color: var(--color-neutral-300);
}

@media (max-width: 640px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-legal {
    justify-content: center;
  }
}

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

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

.animate-delay-100 { animation-delay: 100ms; }
.animate-delay-200 { animation-delay: 200ms; }
.animate-delay-300 { animation-delay: 300ms; }
.animate-delay-400 { animation-delay: 400ms; }

/* Intersection Observer Animation Classes */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .animate-fade-in-up {
    animation: none;
  }
}

/* ============================================
   Pricing Page Styles
   ============================================ */

/* Pricing Modules Grid */
.pricing-modules {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.pricing-module {
  position: relative;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.pricing-module:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-module-core {
  border-color: var(--color-primary);
  border-width: 2px;
}

.module-badge {
  position: absolute;
  top: var(--spacing-4);
  right: var(--spacing-4);
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: var(--color-primary);
  color: white;
  border-radius: var(--radius-full);
}

.module-badge-addon {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

.module-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-4);
}

.module-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.module-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-2);
}

.module-tagline {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-4);
}

.module-features {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--spacing-4);
}

.module-features li {
  position: relative;
  padding-left: var(--spacing-5);
  padding-top: var(--spacing-2);
  padding-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}

.module-features li:last-child {
  border-bottom: none;
}

.module-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322c55e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-size: contain;
}

.module-included {
  margin-top: auto;
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-border);
}

.included-label {
  display: inline-block;
  padding: var(--spacing-2) var(--spacing-4);
  background-color: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
}

.module-price {
  margin-top: auto;
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.module-price .price-amount {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.module-price .price-basis {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* Pricing Tiers */
.pricing-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.pricing-tier {
  position: relative;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.pricing-tier:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-tier-popular {
  border-color: var(--color-primary);
  border-width: 2px;
}

.tier-badge {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: var(--spacing-1) var(--spacing-4);
  background-color: var(--color-primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.tier-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.tier-population {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-4);
}

.tier-price {
  margin-bottom: var(--spacing-1);
}

.tier-price .price-currency {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  vertical-align: top;
}

.tier-price .price-value {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: 1;
}

.tier-price .price-period {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.tier-monthly {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-4);
}

.tier-includes {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: left;
}

.tier-includes li {
  position: relative;
  padding-left: var(--spacing-5);
  padding-top: var(--spacing-2);
  padding-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.tier-includes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322c55e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-size: contain;
}

/* Pricing Calculator */
.pricing-calculator {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--spacing-8);
  margin-top: var(--spacing-8);
}

@media (max-width: 968px) {
  .pricing-calculator {
    grid-template-columns: 1fr;
  }
}

.calculator-inputs {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
}

.calculator-section h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-4);
}

.calculator-hint {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-4);
}

/* Calculator Tier Options */
.calculator-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-3);
}

.calculator-tier-option {
  position: relative;
  cursor: pointer;
}

.calculator-tier-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.tier-option-content {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-4);
  background-color: var(--color-bg-primary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.calculator-tier-option:hover .tier-option-content {
  border-color: var(--color-primary-light);
}

.calculator-tier-option input:checked + .tier-option-content,
.calculator-tier-option.is-selected .tier-option-content {
  border-color: var(--color-primary);
  background-color: rgba(37, 99, 235, 0.05);
}

.calculator-tier-option input:focus-visible + .tier-option-content {
  box-shadow: var(--focus-ring);
}

.tier-option-name {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.tier-option-pop {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2);
}

.tier-option-price {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

/* Calculator Module Options */
.calculator-modules {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.calculator-module-option {
  position: relative;
  cursor: pointer;
}

.calculator-module-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.module-option-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4);
  background-color: var(--color-bg-primary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.calculator-module-option:hover .module-option-content {
  border-color: var(--color-primary-light);
}

.calculator-module-option input:checked + .module-option-content,
.calculator-module-option.is-selected .module-option-content {
  border-color: var(--color-primary);
  background-color: rgba(37, 99, 235, 0.05);
}

.calculator-module-option input:focus-visible + .module-option-content {
  box-shadow: var(--focus-ring);
}

.module-option-check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-tertiary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.module-option-check svg {
  width: 14px;
  height: 14px;
  color: white;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.calculator-module-option input:checked + .module-option-content .module-option-check {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.calculator-module-option input:checked + .module-option-content .module-option-check svg {
  opacity: 1;
}

.module-option-info {
  flex: 1;
}

.module-option-name {
  display: block;
  font-weight: var(--font-weight-semibold);
}

.module-option-desc {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.module-option-price {
  flex-shrink: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
}

/* Bundle Option */
.calculator-bundle {
  margin-top: var(--spacing-4);
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-border);
}

.calculator-bundle-option {
  position: relative;
  cursor: pointer;
}

.calculator-bundle-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.bundle-option-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  transition: background var(--transition-fast);
}

.calculator-bundle-option:hover .bundle-option-content {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
}

.bundle-option-name {
  display: block;
  font-weight: var(--font-weight-semibold);
}

.bundle-option-desc {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.bundle-option-price {
  text-align: right;
}

.bundle-original {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  text-decoration: line-through;
}

.bundle-discounted {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

/* Calculator Summary */
.calculator-summary {
  position: sticky;
  top: var(--spacing-8);
  height: fit-content;
}

.summary-card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-lg);
}

.summary-card h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-4);
  padding-bottom: var(--spacing-4);
  border-bottom: 1px solid var(--color-border);
}

.summary-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
}

.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
}

.summary-item-name {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--color-text-secondary);
}

.summary-item-name svg {
  width: 16px;
  height: 16px;
  color: #22c55e;
}

.summary-item-included .summary-item-name {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

.summary-item-price {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.summary-item-discount .summary-item-name {
  color: #22c55e;
}

.summary-item-discount .summary-item-price {
  color: #22c55e;
}

.summary-total {
  padding-top: var(--spacing-4);
  border-top: 2px solid var(--color-border);
  margin-bottom: var(--spacing-6);
}

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

.total-row .total-label {
  font-weight: var(--font-weight-medium);
}

.total-row .total-value {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.total-row-monthly {
  margin-top: var(--spacing-2);
}

.total-row-monthly .total-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.total-row-monthly .total-value {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.summary-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.summary-note {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* FAQ Grid */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.faq-item {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
}

.faq-question {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-3);
}

.faq-answer {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* CTA Block */
.cta-block {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-block h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-4);
}

.cta-block p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-6);
}

.cta-actions {
  display: flex;
  gap: var(--spacing-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .site-header,
  .site-footer,
  .theme-toggle,
  .mobile-menu-toggle,
  .btn {
    display: none !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.4;
    color: #000;
    background: #fff;
  }

  h1, h2, h3 {
    page-break-after: avoid;
  }

  img {
    max-width: 100% !important;
  }
}