/* ================================================================
   TRITONIUM DESIGN SYSTEM - SINGLE SOURCE OF TRUTH
   ================================================================
   
   Import Order (CRITICAL):
   1. This file (design-system.css) FIRST
   2. /shared/effects.css (animations/visual effects)
   3. /shared/nav.css (navigation specific)
   4. Page-specific overrides ONLY if absolutely necessary
   
   ================================================================ */

/* ================================================================
   1. CSS VARIABLES - FOUNDATION
   ================================================================ */
:root {
  /* Colors - Brand */
  --primary: #7c3aed;
  --secondary: #22d3ee;
  --dark: #000000;
  --darker: #050510;
  --light: #f5f6ff;
  --primary-rgb: 124, 58, 237;
  --secondary-rgb: 34, 211, 238;
  --dark-rgb: 5, 5, 16;
  
  /* Colors - UI States */
  --text-primary: #f5f6ff;
  --text-muted: rgba(255, 255, 255, 0.7);
  --text-disabled: rgba(255, 255, 255, 0.4);
  
  /* Gradients & FX */
  --gradient-primary: linear-gradient(135deg, #7c3aed, #4338ca);
  --gradient-secondary: linear-gradient(135deg, rgba(124, 58, 237, 0.9), rgba(34, 211, 238, 0.9));
  
  /* Shadow System */
  --shadow-sm: 0 4px 15px rgba(var(--primary-rgb), 0.15);
  --shadow-md: 0 8px 24px rgba(var(--primary-rgb), 0.25);
  --shadow-lg: 0 12px 32px rgba(var(--primary-rgb), 0.35);
  --shadow-xl: 0 20px 45px rgba(0, 0, 0, 0.45);
  
  /* Blur Tokens */
  --blur-sm: 8px;
  --blur-md: 12px;
  --blur-lg: 18px;
  --blur-xl: 24px;
  
  /* Colors - Semantic */
  --success: #00d9c0;
  --warning: #f59e0b;
  --error: #ff3b3b;
  --info: #4a9eff;
  
  /* Spacing Scale - T-Shirt Sizing */
  --space-3xs: 4px;
  --space-2xs: 8px;
  --space-xs: 12px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;
  --space-4xl: 128px;
  
  /* Typography Scale */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  --font-size-4xl: 48px;
  --font-size-5xl: 64px;
  --font-size-6xl: 96px;
  
  /* Font Weights */
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-black: 900;
  
  /* Line Heights */
  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Letter Spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.05em;
  --letter-spacing-wider: 0.1em;
  
  /* Layout */
  --section-padding-x: 40px;
  --section-padding-y: 80px;
  --container-max-width: 1400px;
  --content-max-width: 1200px;
  --text-max-width: 720px;
  --nav-height: 72px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-nav: 1000;
  --z-modal: 2000;
  --z-tooltip: 3000;
}

/* ================================================================
   2. RESET & BASE STYLES
   ================================================================ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background: var(--darker);
  overflow-x: hidden;
}

/* ================================================================
   3. TYPOGRAPHY SYSTEM
   ================================================================ */

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(var(--font-size-4xl), 6vw, var(--font-size-6xl));
  font-weight: var(--font-black);
  line-height: 1.05;
}

h2 {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  font-weight: var(--font-black);
}

h3 {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  font-weight: var(--font-bold);
}

h4 {
  font-size: clamp(var(--font-size-xl), 2vw, var(--font-size-3xl));
  font-weight: var(--font-bold);
}

h5 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-semibold);
}

h6 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
}

/* Paragraphs */
p {
  margin-bottom: var(--space-md);
  line-height: var(--line-height-relaxed);
}

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

.lead {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--text-muted);
}

/* Links */
a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--secondary);
}

/* Lists */
ul, ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

li {
  margin-bottom: var(--space-xs);
  line-height: var(--line-height-relaxed);
}

/* ================================================================
   4. LAYOUT CONTAINERS
   ================================================================ */

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

.content-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--section-padding-x);
}

.text-container {
  max-width: var(--text-max-width);
  margin: 0 auto;
}

section {
  padding: var(--section-padding-y) var(--section-padding-x);
}

/* ================================================================
   5. BUTTONS - ALL BUTTON STYLES
   ================================================================ */

.button,
.cta-button,
.neon-button,
.action-button,
.cta-button-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-bold);
  text-decoration: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  background: #0f1218;
  color: var(--light);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: none;
}

.button:hover,
.cta-button:hover,
.neon-button:hover,
.action-button:hover,
.cta-button-large:hover,
.button:focus-visible,
.cta-button:focus-visible,
.neon-button:focus-visible,
.action-button:focus-visible,
.cta-button-large:focus-visible {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 0 26px rgba(255, 140, 0, 0.5);
  background: #131821;
  color: var(--light);
  outline: none;
}

.neon-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -120%;
  width: 120%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: transform 0.6s ease;
  transform: translateX(0);
}

.neon-button:hover::before,
.neon-button:focus-visible::before {
  transform: translateX(160%);
}

.button:active,
.cta-button:active,
.neon-button:active,
.action-button:active,
.cta-button-large:active {
  transform: translateY(0);
  box-shadow: 0 0 16px rgba(255, 140, 0, 0.3);
}

/* Secondary Button */
.button-secondary,
.neon-button-secondary,
.action-button.secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  box-shadow: none;
}

.button-secondary:hover,
.neon-button-secondary:hover,
.action-button.secondary:hover,
.action-button.secondary:focus-visible {
  background: rgba(255, 140, 0, 0.1);
  color: var(--primary);
}

/* Button Sizes */
.button-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-sm);
}

.button-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
}

.cta-button-large {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
}

/* ================================================================
   6. FORM INPUTS - GLOBAL FORM STYLING
   ================================================================ */

input:not([type="checkbox"]):not([type="radio"]),
textarea,
select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

input:not([type="checkbox"]):not([type="radio"]):focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: rgba(255, 140, 0, 0.5);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.15);
}

input:not([type="checkbox"]):not([type="radio"])::placeholder,
textarea::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' opacity='0.6' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: var(--space-xl);
}

input:disabled,
textarea:disabled,
select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

input.error,
textarea.error,
select.error {
  border-color: var(--error);
  background: rgba(255, 59, 59, 0.05);
}

input.error:focus,
textarea.error:focus,
select.error:focus {
  box-shadow: 0 0 0 3px rgba(255, 59, 59, 0.15);
}

/* ================================================================
   6. FOOTER - STANDARDIZED ACROSS ALL PAGES
   ================================================================ */

footer {
  margin-top: var(--space-3xl);
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  background: radial-gradient(circle at top, rgba(255, 140, 0, 0.15), transparent 55%), rgba(4, 5, 12, 0.95);
  position: relative;
  overflow: hidden;
}

footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 140, 0, 0.14), rgba(0, 217, 192, 0.06));
  opacity: 0.4;
  pointer-events: none;
}

.footer-content {
  position: relative;
  z-index: 1;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(260px, 1.4fr) minmax(320px, 2fr);
  gap: var(--space-3xl);
  align-items: start;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-tagline {
  color: var(--text-muted);
  max-width: 22rem;
}

.footer-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-md);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.footer-socials {
  display: inline-flex;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-weight: var(--font-semibold);
  flex-wrap: wrap;
}

.footer-social-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-full);
  text-decoration: none;
  color: inherit;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.footer-social-link svg {
  width: 16px;
  height: 16px;
}

.footer-social-link span {
  font-weight: var(--font-semibold);
}

.footer-social-link:hover {
  color: var(--light);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px) scale(1.01);
}

.footer-trust {
  display: none;
}

.footer-badges {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  align-items: flex-start;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-1) var(--space-md);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: var(--font-size-xs);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: var(--text-muted);
  width: 100%;
  max-width: 280px;
  background: rgba(255, 255, 255, 0.04);
}

.footer-badge--outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.12);
}

.footer-badge--glow {
  background: var(--gradient-secondary);
  color: var(--light);
  border-color: rgba(var(--primary-rgb), 0.35);
  box-shadow: 0 0 25px rgba(var(--primary-rgb), 0.25);
}

.footer-partners {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-md);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.footer-partners span {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-weight: var(--font-medium);
  text-align: center;
  min-height: 60px;
  transition: all var(--transition-base);
}

.footer-partners span:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: var(--space-xl);
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-heading {
  font-size: var(--font-size-sm);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--primary);
  margin-bottom: var(--space-sm);
  opacity: 0.9;
}

.footer-copy-sm {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin: 0 0 var(--space-xs);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: var(--font-medium);
  transition: color var(--transition-base);
}

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

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.footer-copyright {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin: 0;
}

.footer-contact a {
  color: var(--primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-semibold);
  transition: color var(--transition-base);
}

.footer-contact a:hover {
  color: var(--light);
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  width: 100%;
}

.newsletter-controls {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.newsletter-controls input[type="email"] {
  flex: 1 1 220px;
  min-width: 0;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  color: var(--light);
}

.newsletter-controls input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.newsletter-status {
  min-height: 20px;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* ================================================================
   7. CARDS & COMPONENTS
   ================================================================ */

.card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

/* ================================================================
   8. UTILITY CLASSES
   ================================================================ */

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

/* Text Alignment */
.text-center {
  text-align: center;
}

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

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

/* Display */
.flex {
  display: flex;
}

.grid {
  display: grid;
}

.hidden {
  display: none;
}

/* Spacing Utilities */
.mt-xs { margin-top: var(--space-xs); }
.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); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }

.mb-xs { margin-bottom: var(--space-xs); }
.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); }

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

/* ================================================================
   9. RESPONSIVE BREAKPOINTS
   ================================================================ */

/* Mobile First Approach */

/* Tablet: 768px and up */
@media (max-width: 768px) {
  :root {
    --section-padding-x: 24px;
    --section-padding-y: 60px;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }
  
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
}

@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(160px, 1fr));
  }

  .footer-trust {
    grid-template-columns: repeat(2, minmax(150px, 1fr));
  }
}

@media (max-width: 600px) {
  .footer-grid,
  .footer-trust {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }
}

/* Mobile: 540px and down */
@media (max-width: 540px) {
  :root {
    --section-padding-x: 16px;
    --section-padding-y: 48px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-2xl);
  }
  
  .button,
  .cta-button,
  .neon-button {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
  }
}

/* ================================================================
   10. ACCESSIBILITY
   ================================================================ */

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --text-muted: rgba(255, 255, 255, 0.9);
  }
  
  .card {
    border: 2px solid rgba(255, 255, 255, 0.2);
  }
}

/* ================================================================
   END OF DESIGN SYSTEM
   ================================================================ */

.footer-copy {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin: 0;
}

@media (min-width: 900px) {
  .footer-top {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: var(--space-2xl);
  }

  .footer-trust {
    justify-content: space-between;
  }
}

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

  .footer-bottom {
    text-align: left;
  }
}
.footer-partners span:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

@media (max-width: 900px) {
  .footer-trust {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer-partners {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .footer-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-sm);
  }

  .footer-badge {
    max-width: 100%;
  }
}