/*
 * PolarisONE - Main Stylesheet
 * A premium newsroom aesthetic with modern cinematic UI
 * 
 * Typography: Playfair Display (headlines) + Inter (body)
 * Palette: off-white paper, deep charcoal, sepia accents, electric cyan/Polaris blue
 */

/* ============================================
   CSS VARIABLES (THEME TOKENS)
   ============================================ */
:root {
  /* Colors - Vintage Mode (Default) */
  --color-paper: #f5f2eb;
  --color-paper-dark: #e8e4db;
  --color-charcoal: #1a1a1a;
  --color-charcoal-light: #333333;
  --color-sepia: #8b7355;
  --color-sepia-light: #b8a088;
  --color-accent: #00d4ff;
  --color-accent-dark: #0099cc;
  --color-polaris-blue: #3a7bd5;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  /* Typography */
  --font-headline: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Font Sizes */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3rem);
  --text-5xl: clamp(3rem, 2rem + 5vw, 4.5rem);
  --text-6xl: clamp(3.75rem, 2.5rem + 6.25vw, 6rem);
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Layout */
  --max-width: 1400px;
  --header-height: 80px;
  
  /* Effects */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

/* Sleek Mode Theme Override */
body.sleek-mode {
  --color-paper: #0f0f14;
  --color-paper-dark: #1a1a24;
  --color-charcoal: #ffffff;
  --color-charcoal-light: #e0e0e0;
  --color-sepia: #00d4ff;
  --color-sepia-light: #66e3ff;
}

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

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-charcoal);
  background-color: var(--color-paper);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Paper texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  z-index: 9999;
}

/* Vignette effect */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, transparent 60%, rgba(0, 0, 0, 0.15) 100%);
  pointer-events: none;
  z-index: 9998;
}

body.sleek-mode::before {
  opacity: 0.02;
}

body.sleek-mode::after {
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.4) 100%);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-charcoal);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-4);
  max-width: 70ch;
}

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

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

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

strong, b {
  font-weight: 600;
}

em, i {
  font-style: italic;
}

small {
  font-size: var(--text-sm);
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

.section {
  padding-block: var(--space-16);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-24);
  }
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.flex {
  display: flex;
}

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

.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;
}

/* ============================================
   HEADER / MASTHEAD
   ============================================ */
.masthead {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-paper);
  border-bottom: 1px solid var(--color-charcoal-light);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--space-4);
}

.masthead-logo {
  font-family: var(--font-headline);
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--color-charcoal);
  text-decoration: none;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.masthead-logo:hover {
  color: var(--color-charcoal);
}

.masthead-logo svg {
  width: 32px;
  height: 32px;
}

/* Primary Navigation */
.nav-primary {
  display: none;
}

@media (min-width: 1024px) {
  .nav-primary {
    display: flex;
    align-items: center;
    gap: var(--space-8);
  }
}

.nav-primary a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-charcoal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-2) 0;
  position: relative;
}

.nav-primary a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav-primary a:hover::after,
.nav-primary a[aria-current="page"]::after {
  width: 100%;
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-charcoal);
}

@media (min-width: 1024px) {
  .mobile-menu-toggle {
    display: none;
  }
}

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

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-paper);
  z-index: var(--z-modal);
  overflow-y: auto;
  padding: var(--space-6);
}

.mobile-nav.is-open {
  display: block;
}

@media (min-width: 1024px) {
  .mobile-nav {
    display: none !important;
  }
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav-list a {
  display: block;
  font-family: var(--font-headline);
  font-size: var(--text-2xl);
  color: var(--color-charcoal);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-charcoal-light);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  border-radius: 4px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-charcoal);
  border-color: var(--color-charcoal);
}

.btn-secondary:hover {
  background-color: var(--color-charcoal);
  color: var(--color-paper);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-charcoal);
  border-color: transparent;
}

.btn-ghost:hover {
  background-color: var(--color-paper-dark);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

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

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: var(--space-16);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-dateline {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-sepia);
  margin-bottom: var(--space-4);
}

.hero-dateline::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--color-sepia), transparent);
  max-width: 200px;
}

.hero-headline {
  font-size: var(--text-6xl);
  margin-bottom: var(--space-6);
  line-height: 1.05;
}

.hero-headline .highlight {
  color: var(--color-accent);
  position: relative;
}

.hero-subheadline {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-charcoal-light);
  max-width: 600px;
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* Typewriter effect for hero headline */
.typewriter {
  overflow: hidden;
  border-right: 3px solid var(--color-accent);
  white-space: nowrap;
  animation: typewriter 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typewriter {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: var(--color-accent); }
}

/* Parallax background elements */
.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  overflow: hidden;
}

.hero-bg-layer {
  position: absolute;
  will-change: transform;
}

.hero-bg-grid {
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(var(--color-charcoal-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-charcoal-light) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.05;
}

.hero-bg-circle {
  width: 600px;
  height: 600px;
  border-radius: 50%;
  border: 1px solid var(--color-accent);
  opacity: 0.1;
  top: 50%;
  right: -200px;
  transform: translateY(-50%);
}

.hero-bg-lines {
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 100px,
    var(--color-sepia-light) 100px,
    var(--color-sepia-light) 101px
  );
  opacity: 0.03;
}

/* ============================================
   FEATURE CARDS
   ============================================ */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  position: relative;
  background-color: var(--color-paper);
  border: 1px solid var(--color-charcoal-light);
  padding: var(--space-8);
  transition: all var(--transition-base);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background-color: var(--color-accent);
  transition: height var(--transition-base);
}

.feature-card:hover::before {
  height: 100%;
}

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

.feature-card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-4);
  color: var(--color-accent);
}

.feature-card-title {
  font-family: var(--font-headline);
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.feature-card-description {
  font-size: var(--text-sm);
  color: var(--color-charcoal-light);
  margin-bottom: var(--space-4);
}

.feature-card-link {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.feature-card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.feature-card-link:hover svg {
  transform: translateX(4px);
}

/* Coming Soon Badge */
.badge-coming-soon {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background-color: var(--color-sepia);
  color: var(--color-paper);
  border-radius: 2px;
}

/* ============================================
   EDITORIAL GRID (NEWS LAYOUT)
   ============================================ */
.editorial-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .editorial-grid {
    grid-template-columns: 2fr 1fr;
  }
}

.editorial-lead {
  position: relative;
}

.editorial-lead-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  margin-bottom: var(--space-4);
  filter: sepia(10%);
  transition: filter var(--transition-base);
}

.editorial-lead:hover .editorial-lead-image {
  filter: sepia(0%);
}

.editorial-lead-category {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.editorial-lead-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-3);
  line-height: 1.2;
}

.editorial-lead-excerpt {
  font-size: var(--text-base);
  color: var(--color-charcoal-light);
  margin-bottom: var(--space-4);
}

.editorial-lead-meta {
  font-size: var(--text-xs);
  color: var(--color-sepia);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Sidebar stories */
.editorial-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.sidebar-story {
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-charcoal-light);
}

.sidebar-story:last-child {
  border-bottom: none;
}

.sidebar-story-category {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-sepia);
  margin-bottom: var(--space-2);
}

.sidebar-story-title {
  font-family: var(--font-headline);
  font-size: var(--text-lg);
  line-height: 1.3;
  margin-bottom: var(--space-2);
}

.sidebar-story-meta {
  font-size: var(--text-xs);
  color: var(--color-charcoal-light);
}

/* ============================================
   PRICING SECTION
   ============================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

@media (min-width: 768px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing-card {
  position: relative;
  background-color: var(--color-paper);
  border: 1px solid var(--color-charcoal-light);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
}

.pricing-card.featured {
  border-color: var(--color-accent);
  transform: scale(1.02);
}

.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: var(--space-1) var(--space-4);
  background-color: var(--color-accent);
  color: var(--color-charcoal);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-card:hover {
  box-shadow: var(--shadow-lg);
}

.pricing-card-tier {
  font-family: var(--font-headline);
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.pricing-card-price {
  font-family: var(--font-headline);
  font-size: var(--text-4xl);
  margin-bottom: var(--space-1);
}

.pricing-card-price span {
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-charcoal-light);
}

.pricing-card-description {
  font-size: var(--text-sm);
  color: var(--color-charcoal-light);
  margin-bottom: var(--space-6);
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: var(--space-6);
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
}

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

/* ============================================
   STATS / METRICS
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  text-align: center;
  padding: var(--space-6);
}

.stat-value {
  font-family: var(--font-headline);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.stat-value[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-slow);
}

.stat-value[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stat-label {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-charcoal-light);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background-color: var(--color-charcoal);
  color: var(--color-paper);
  padding-block: var(--space-16);
  margin-top: var(--space-24);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr repeat(3, 1fr);
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  font-family: var(--font-headline);
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--color-paper);
  margin-bottom: var(--space-4);
  display: block;
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-paper-dark);
  opacity: 0.8;
}

.footer-nav-title {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
  color: var(--color-paper);
}

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

.footer-nav-list li {
  margin-bottom: var(--space-2);
}

.footer-nav-list a {
  font-size: var(--text-sm);
  color: var(--color-paper-dark);
  opacity: 0.8;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.footer-nav-list a:hover {
  opacity: 1;
  color: var(--color-accent);
}

.footer-bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--color-paper-dark);
  opacity: 0.6;
}

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.footer-social a {
  color: var(--color-paper-dark);
  opacity: 0.8;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.footer-social a:hover {
  opacity: 1;
  color: var(--color-accent);
}

.footer-social svg {
  width: 20px;
  height: 20px;
}

/* ============================================
   MODAL
   ============================================ */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

/* Fallback for browsers without backdrop-filter */
@supports (backdrop-filter: blur(8px)) {
  .modal-backdrop {
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
  }
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  background-color: var(--color-paper);
  padding: var(--space-8);
  max-width: 500px;
  width: 90%;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-xl);
}

.modal.is-open {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-charcoal-light);
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-charcoal);
}

.modal-close svg {
  width: 24px;
  height: 24px;
}

.modal-title {
  font-family: var(--font-headline);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

.modal-content {
  color: var(--color-charcoal-light);
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.stagger-children.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger-children.is-visible > *:nth-child(2) { transition-delay: 100ms; }
.stagger-children.is-visible > *:nth-child(3) { transition-delay: 200ms; }
.stagger-children.is-visible > *:nth-child(4) { transition-delay: 300ms; }
.stagger-children.is-visible > *:nth-child(5) { transition-delay: 400ms; }
.stagger-children.is-visible > *:nth-child(6) { transition-delay: 500ms; }

.stagger-children.is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   SVG LINE DRAW ANIMATION
   ============================================ */
.line-draw path {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  transition: stroke-dashoffset 2s ease-out;
}

.line-draw.is-visible path {
  stroke-dashoffset: 0;
}

/* ============================================
   INK REVEAL EFFECT
   ============================================ */
.ink-reveal {
  position: relative;
  overflow: hidden;
}

.ink-reveal::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-paper) 50%,
    transparent 100%
  );
  transition: left 1s ease-out;
}

.ink-reveal.is-visible::after {
  left: 100%;
}

/* ============================================
   MODE TOGGLE
   ============================================ */
.mode-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  background-color: var(--color-paper-dark);
  border-radius: 24px;
  cursor: pointer;
  border: none;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mode-toggle-option {
  padding: var(--space-1) var(--space-3);
  border-radius: 16px;
  transition: all var(--transition-fast);
  color: var(--color-charcoal-light);
}

.mode-toggle-option.active {
  background-color: var(--color-charcoal);
  color: var(--color-paper);
}

body.sleek-mode .mode-toggle-option.active {
  background-color: var(--color-accent);
  color: var(--color-charcoal);
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  font-size: var(--text-sm);
  color: var(--color-charcoal-light);
}

.breadcrumbs a {
  color: var(--color-charcoal-light);
}

.breadcrumbs a:hover {
  color: var(--color-accent);
}

.breadcrumbs .separator {
  color: var(--color-sepia-light);
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-charcoal);
  font-weight: 500;
}

/* ============================================
   PAGE HEADER
   ============================================ */
.page-header {
  padding-block: var(--space-12);
  text-align: center;
  border-bottom: 1px solid var(--color-charcoal-light);
  margin-bottom: var(--space-12);
}

.page-header-title {
  font-size: var(--text-5xl);
  margin-bottom: var(--space-4);
}

.page-header-subtitle {
  font-size: var(--text-xl);
  color: var(--color-charcoal-light);
  max-width: 700px;
  margin-inline: auto;
}

/* ============================================
   FEATURE PAGE LAYOUTS
   ============================================ */
.feature-hero {
  padding-block: var(--space-16);
  text-align: center;
}

.feature-hero-icon {
  width: 80px;
  height: 80px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
  color: var(--color-accent);
}

.feature-hero-title {
  font-size: var(--text-5xl);
  margin-bottom: var(--space-4);
}

.feature-hero-description {
  font-size: var(--text-xl);
  color: var(--color-charcoal-light);
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.feature-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
  padding-block: var(--space-12);
}

@media (min-width: 768px) {
  .feature-detail {
    grid-template-columns: 1fr 1fr;
  }
  
  .feature-detail.reverse {
    direction: rtl;
  }
  
  .feature-detail.reverse > * {
    direction: ltr;
  }
}

.feature-detail-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--color-charcoal-light);
}

.feature-detail-content {
  padding: var(--space-6);
}

.feature-detail-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.feature-detail-text {
  color: var(--color-charcoal-light);
  margin-bottom: var(--space-6);
}

.feature-list {
  list-style: none;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  font-size: var(--text-base);
}

.feature-list li svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--color-accent);
}

/* ============================================
   CTA SECTIONS
   ============================================ */
.cta-section {
  background-color: var(--color-charcoal);
  color: var(--color-paper);
  padding-block: var(--space-16);
  text-align: center;
}

.cta-section h2 {
  color: var(--color-paper);
  margin-bottom: var(--space-4);
}

.cta-section p {
  color: var(--color-paper-dark);
  opacity: 0.9;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.cta-section .btn-primary:hover {
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.5);
}

/* ============================================
   ENTERPRISE PAGE
   ============================================ */
.enterprise-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .enterprise-features {
    grid-template-columns: repeat(2, 1fr);
  }
}

.enterprise-feature {
  display: flex;
  gap: var(--space-4);
}

.enterprise-feature-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  color: var(--color-accent);
}

.enterprise-feature-title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.enterprise-feature-text {
  font-size: var(--text-sm);
  color: var(--color-charcoal-light);
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin-inline: auto;
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-charcoal);
  background-color: var(--color-paper);
  border: 1px solid var(--color-charcoal-light);
  border-radius: 4px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
}

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

/* ============================================
   SOLUTIONS PAGE
   ============================================ */
.solution-card {
  background-color: var(--color-paper);
  border: 1px solid var(--color-charcoal-light);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
}

.solution-card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.solution-card-icon {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  color: var(--color-accent);
}

.solution-card-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.solution-card-subtitle {
  font-size: var(--text-base);
  color: var(--color-sepia);
}

.solution-card-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .solution-card-features {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   LAZY LOADING IMAGES
   ============================================ */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity var(--transition-base);
}

img[loading="lazy"].loaded,
img[loading="lazy"]:not([src=""]) {
  opacity: 1;
}

/* ============================================
   SKIP LINK (A11y)
   ============================================ */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background-color: var(--color-accent);
  color: var(--color-charcoal);
  font-weight: 600;
  text-decoration: none;
  z-index: 10000;
  transition: top var(--transition-fast);
}

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

/* ============================================
   FILM GRAIN EFFECT
   ============================================ */
.film-grain {
  position: relative;
}

.film-grain::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='turbulence' baseFrequency='0.9' numOctaves='3' result='noise'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23grain)'/%3E%3C/svg%3E");
  opacity: 0.05;
  mix-blend-mode: overlay;
  animation: grain 0.5s steps(10) infinite;
}

@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-1%, -1%); }
  20% { transform: translate(1%, 1%); }
  30% { transform: translate(-1%, 1%); }
  40% { transform: translate(1%, -1%); }
  50% { transform: translate(-1%, 0%); }
  60% { transform: translate(1%, 0%); }
  70% { transform: translate(0%, 1%); }
  80% { transform: translate(0%, -1%); }
  90% { transform: translate(1%, 1%); }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-accent { color: var(--color-accent); }
.text-sepia { color: var(--color-sepia); }
.text-muted { color: var(--color-charcoal-light); }

.bg-paper { background-color: var(--color-paper); }
.bg-dark { background-color: var(--color-charcoal); color: var(--color-paper); }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }

.py-8 { padding-block: var(--space-8); }
.py-12 { padding-block: var(--space-12); }
.py-16 { padding-block: var(--space-16); }

.hidden { display: none !important; }
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* Print styles */
@media print {
  body::before,
  body::after,
  .masthead,
  .site-footer,
  .btn,
  .modal,
  .modal-backdrop {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  a {
    text-decoration: underline;
  }
}