/* ============================================
   SALINI C - PREMIUM PORTFOLIO
   Design System & Styles
   ============================================ */

/* ---- CSS Custom Properties ---- */
:root {
  /* Color Palette - Dark Mode with Purple/Gold */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #1a1a25;
  --color-bg-card: rgba(26, 26, 37, 0.7);
  --color-bg-glass: rgba(26, 26, 37, 0.4);
  
  --color-accent-primary: #8b5cf6;
  --color-accent-secondary: #a78bfa;
  --color-accent-tertiary: #c4b5fd;
  --color-accent-gold: #f59e0b;
  --color-accent-gold-light: #fbbf24;
  
  --color-text-primary: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #64748b;
  
  --color-border: rgba(139, 92, 246, 0.2);
  --color-border-hover: rgba(139, 92, 246, 0.4);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #6366f1 50%, #8b5cf6 100%);
  --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
  --gradient-glass: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(99, 102, 241, 0.05) 100%);
  --gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
  --gradient-card: linear-gradient(180deg, rgba(139, 92, 246, 0.08) 0%, transparent 100%);
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;
  
  /* 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;
  --space-32: 8rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.3);
  --shadow-glow-gold: 0 0 40px rgba(245, 158, 11, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Layout */
  --container-max: 1280px;
  --container-narrow: 800px;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
}

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

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

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

.section {
  padding: var(--space-24) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-gold);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gold {
  color: var(--color-accent-gold);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 60px rgba(139, 92, 246, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--color-accent-primary);
  background: rgba(139, 92, 246, 0.1);
}

.btn-gold {
  background: var(--gradient-gold);
  color: var(--color-bg-primary);
  font-weight: 600;
  box-shadow: var(--shadow-glow-gold);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 60px rgba(245, 158, 11, 0.5);
}

/* ---- Cards ---- */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  backdrop-filter: blur(20px);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card-glass {
  background: var(--color-bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-4) 0;
  transition: all var(--transition-base);
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

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

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.nav-logo span {
  color: var(--color-accent-gold);
}

.nav-links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
}

.nav-links a {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

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

.nav-links a:hover::after, .nav-links a.active::after {
  width: 100%;
}

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

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav-mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-fast);
}

/* ---- Hero Section ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--space-20);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero);
  pointer-events: none;
}

.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
  pointer-events: none;
}

.hero-bg-orb-1 {
  width: 600px;
  height: 600px;
  background: var(--color-accent-primary);
  top: -200px;
  right: -100px;
}

.hero-bg-orb-2 {
  width: 400px;
  height: 400px;
  background: var(--color-accent-gold);
  bottom: -100px;
  left: -100px;
}

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

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-accent-secondary);
  margin-bottom: var(--space-6);
}

.hero-label-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent-gold);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: var(--text-6xl);
  font-weight: 700;
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero-title-highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  max-width: 600px;
}

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

.hero-stats {
  display: flex;
  gap: var(--space-12);
  margin-top: var(--space-16);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

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

.hero-stat-value {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-accent-gold);
}

.hero-stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---- Credibility Strip ---- */
.credibility {
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  overflow: hidden;
}

.credibility-label {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.credibility-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-12);
  flex-wrap: wrap;
}

.credibility-logo {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-muted);
  opacity: 0.7;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.credibility-logo:hover {
  opacity: 1;
  color: var(--color-text-primary);
}

/* ---- Impact Dashboard ---- */
.impact-dashboard {
  background: var(--color-bg-secondary);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
}

.metric-card {
  text-align: center;
  padding: var(--space-8);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.metric-card:hover {
  border-color: var(--color-accent-primary);
  transform: scale(1.02);
}

.metric-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-lg);
  font-size: var(--text-2xl);
}

.metric-value {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-2);
}

.metric-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ---- Impact Map ---- */
.impact-map {
  background: var(--color-bg-primary);
}

.impact-map-container {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  min-height: 600px;
  position: relative;
}

.impact-map-filters {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: transparent;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--color-text-primary);
  border-color: var(--color-accent-primary);
  background: rgba(139, 92, 246, 0.1);
}

.impact-map-svg {
  width: 100%;
  height: 500px;
}

.node {
  cursor: pointer;
  transition: all var(--transition-fast);
}

.node:hover {
  filter: brightness(1.2);
}

.node-company circle {
  fill: var(--color-accent-primary);
  stroke: var(--color-accent-secondary);
  stroke-width: 2;
}

.node-theme circle {
  fill: var(--color-accent-gold);
  stroke: var(--color-accent-gold-light);
  stroke-width: 2;
}

.node-label {
  fill: var(--color-text-primary);
  font-size: 12px;
  font-family: var(--font-body);
  text-anchor: middle;
  pointer-events: none;
}

.link {
  stroke: var(--color-border);
  stroke-opacity: 0.6;
  stroke-width: 1;
}

/* ---- Hiring Engine Simulator ---- */
.simulator {
  background: var(--color-bg-secondary);
}

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

.simulator-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.simulator-input-group {
  background: var(--color-bg-tertiary);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.simulator-input-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.simulator-input-value {
  color: var(--color-accent-gold);
  font-weight: 600;
}

.simulator-slider {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  background: var(--color-bg-primary);
  border-radius: var(--radius-full);
  outline: none;
}

.simulator-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--gradient-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-glow);
}

.simulator-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--gradient-primary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-glow);
}

.simulator-results {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
}

.simulator-results-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-6);
  color: var(--color-text-primary);
}

.simulator-result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.simulator-result-item:last-child {
  border-bottom: none;
}

.simulator-result-label {
  color: var(--color-text-secondary);
}

.simulator-result-value {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-accent-gold);
}

/* ---- Case Studies ---- */
.case-studies {
  background: var(--color-bg-primary);
}

.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
}

.case-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  cursor: pointer;
  transition: all var(--transition-base);
  overflow: hidden;
}

.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.case-card:hover {
  border-color: var(--color-accent-primary);
  transform: translateY(-4px);
}

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

.case-company {
  font-size: var(--text-sm);
  color: var(--color-accent-gold);
  font-weight: 500;
  margin-bottom: var(--space-2);
}

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

.case-metrics {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.case-metric {
  padding: var(--space-1) var(--space-3);
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-accent-secondary);
}

.case-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.case-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-accent-primary);
}

.case-cta svg {
  transition: transform var(--transition-fast);
}

.case-card:hover .case-cta svg {
  transform: translateX(4px);
}

/* ---- Services ---- */
.services {
  background: var(--color-bg-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}

@media (max-width: 1024px) {
  .approach-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition: all var(--transition-base);
}

.service-card.featured {
  border-color: var(--color-accent-gold);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.1) 0%, var(--color-bg-card) 30%);
}

.service-badge {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background: var(--gradient-gold);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-bg-primary);
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-lg);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
}

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

.service-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.service-features {
  list-style: none;
  margin-bottom: var(--space-6);
}

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

.service-features li::before {
  content: '✓';
  color: var(--color-accent-gold);
  font-weight: 700;
}

.service-card:hover {
  border-color: var(--color-accent-primary);
  transform: translateY(-4px);
}

/* ---- Proof Vault ---- */
.proof-vault {
  background: var(--color-bg-primary);
}

.proof-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.proof-category {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

.proof-category-title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.proof-category-title span {
  font-size: var(--text-2xl);
}

.proof-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.proof-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.proof-item:hover {
  border-color: var(--color-accent-primary);
  color: var(--color-text-primary);
}

/* ---- Testimonials ---- */
.testimonials {
  background: var(--color-bg-secondary);
}

.testimonials-slider {
  position: relative;
  overflow: hidden;
}

.testimonials-track {
  display: flex;
  transition: transform var(--transition-slow);
}

.testimonial-card {
  flex: 0 0 100%;
  padding: var(--space-12);
  text-align: center;
}

.testimonial-quote {
  font-size: var(--text-2xl);
  font-style: italic;
  color: var(--color-text-primary);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.testimonial-quote::before {
  content: '"';
  color: var(--color-accent-gold);
  font-size: var(--text-5xl);
  font-family: Georgia, serif;
  line-height: 0;
  margin-right: var(--space-2);
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.testimonial-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: 600;
}

.testimonial-info h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.testimonial-info p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.testimonials-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.testimonials-nav button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.testimonials-nav button.active {
  background: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
}

/* ---- Contact Section ---- */
.contact {
  background: var(--color-bg-primary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.contact-info h3 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
}

.contact-info p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text-secondary);
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-lg);
  font-size: var(--text-xl);
}

.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
}

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

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

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-4);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-primary);
  font-size: var(--text-base);
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-primary);
}

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

.calendar-embed {
  margin-top: var(--space-8);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 400px;
}

/* ---- Footer ---- */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  color: var(--color-text-secondary);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
}

.footer-title {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

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

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

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

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

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

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

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.footer-bottom p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: 90%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-text-primary);
  border-color: var(--color-accent-primary);
}

.modal-header {
  margin-bottom: var(--space-6);
}

.modal-company {
  font-size: var(--text-sm);
  color: var(--color-accent-gold);
  margin-bottom: var(--space-2);
}

.modal-title {
  font-size: var(--text-2xl);
}

.modal-section {
  margin-bottom: var(--space-6);
}

.modal-section-title {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-3);
}

.modal-section p,
.modal-section ul {
  color: var(--color-text-secondary);
  font-size: var(--text-base);
}

.modal-section ul {
  list-style: none;
  padding-left: var(--space-4);
}

.modal-section ul li {
  position: relative;
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
}

.modal-section ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-accent-gold);
}

.modal-artifact {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.modal-artifact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-lg);
  font-size: var(--text-2xl);
}

.modal-artifact-info h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.modal-artifact-info p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---- Animations ---- */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .proof-categories {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  :root {
    --text-6xl: 2.5rem;
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
  }
  
  .nav-links,
  .nav-cta .btn-secondary {
    display: none;
  }
  
  .nav-mobile-toggle {
    display: flex;
  }
  
  .hero-stats {
    flex-wrap: wrap;
    gap: var(--space-6);
  }
  
  .hero-stat {
    flex: 1 1 calc(50% - var(--space-3));
  }
  
  .simulator-container {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--space-16) 0;
  }
  
  .container {
    padding: 0 var(--space-4);
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .hero-cta .btn {
    width: 100%;
  }
}