/**
 * StitchLab Space - Editorial Design System (Inspired by Knotch)
 * Premium Typography + Consultancy-First Layout
 */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Outfit:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Color Palette */
  --color-dark-bg: #000000;
  --color-dark-secondary: #0a0a0a;
  --color-dark-tertiary: #1a1a1a;
  --color-accent-green: #00ff66;
  --color-accent-cyan: #00d9ff;
  --color-text-primary: #ffffff;
  --color-text-secondary: #e0e0e0;
  --color-text-muted: #808080;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-accent: rgba(0, 255, 102, 0.15);

  /* Typography */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Sizing */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 48px;
  --font-size-4xl: 64px;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.8);
}

/* ========================================
   GLOBAL RESET & BASE STYLES
   ======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-dark-bg);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* ========================================
   TYPOGRAPHY SYSTEM
   ======================================== */

h1 {
  font-family: var(--font-display);
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: var(--spacing-md);
}

h2 {
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: var(--spacing-md);
}

h3 {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

p {
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

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

.text-accent {
  color: var(--color-accent-green);
  font-weight: 600;
}

/* ========================================
   LAYOUT CONTAINERS
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.section:last-child {
  border-bottom: none;
}

/* ========================================
   NAVIGATION
   ======================================== */

nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
}

.nav-brand {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-accent-green);
  text-decoration: none;
  letter-spacing: 2px;
}

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

.nav-links a {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:hover {
  color: var(--color-accent-green);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-green);
  transition: width var(--transition-fast);
}

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

/* ========================================
   HERO SECTION (Editorial Style)
   ======================================== */

#main-content {
  margin-top: 80px;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl) 0;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 900px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(48px, 8vw, 80px);
  margin-bottom: var(--spacing-lg);
  line-height: 1.05;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-block;
  padding: 16px 32px;
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--color-accent-green);
  color: var(--color-dark-bg);
  border-color: var(--color-accent-green);
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-accent-green);
  box-shadow: 0 0 30px rgba(0, 255, 102, 0.4);
}

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

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

/* ========================================
   CONSULTANCY SECTION (Process)
   ======================================== */

.consultancy-section {
  padding: var(--spacing-2xl) 0;
}

.consultancy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.consultancy-card {
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border-accent);
  background: rgba(0, 255, 102, 0.02);
  transition: all var(--transition-smooth);
  position: relative;
}

.consultancy-card:hover {
  border-color: var(--color-accent-green);
  background: rgba(0, 255, 102, 0.05);
  transform: translateY(-4px);
}

.consultancy-card h4 {
  color: var(--color-accent-green);
  margin-bottom: var(--spacing-md);
}

.consultancy-card p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* ========================================
   PROOF SECTION (Trust Banners)
   ======================================== */

.proof-section {
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.proof-title {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-lg);
}

.proof-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.proof-logo {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.proof-logo:hover {
  border-color: var(--color-accent-green);
  color: var(--color-accent-green);
}

/* ========================================
   WORKFLOW CARDS (Editorial)
   ======================================== */

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.workflow-card {
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  background: var(--color-dark-secondary);
  transition: all var(--transition-smooth);
  cursor: pointer;
  position: relative;
}

.workflow-card:hover {
  border-color: var(--color-accent-green);
  background: var(--color-dark-tertiary);
}

.workflow-card h3 {
  color: var(--color-accent-green);
  margin-bottom: var(--spacing-md);
}

.workflow-card p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

/* ========================================
   FOOTER
   ======================================== */

footer {
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: var(--color-accent-green);
  margin-bottom: var(--spacing-md);
}

.footer-section a {
  display: block;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-fast);
  font-size: var(--font-size-sm);
}

.footer-section a:hover {
  color: var(--color-accent-green);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 48px;
    --font-size-3xl: 36px;
    --font-size-2xl: 28px;
    --spacing-2xl: 40px;
    --spacing-xl: 32px;
  }

  nav {
    height: 60px;
    padding: 0 var(--spacing-md);
  }

  .nav-links {
    gap: var(--spacing-md);
  }

  .nav-links a {
    font-size: 11px;
  }

  #main-content {
    margin-top: 60px;
  }

  .hero {
    min-height: 80vh;
    padding: var(--spacing-xl) 0;
  }

  .hero h1 {
    font-size: clamp(32px, 6vw, 48px);
  }

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

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .consultancy-grid {
    grid-template-columns: 1fr;
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   ANIMATION UTILITIES
   ======================================== */

.fade-in {
  animation: fadeIn var(--transition-slow) ease-out forwards;
}

.slide-up {
  animation: slideUp var(--transition-smooth) ease-out forwards;
}

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

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