/* ============================================================================
   LAWKRAFT - MODERN PROFESSIONAL TECH DESIGN SYSTEM
   AI Consulting for Regulated Industries
   Professional. Technical. European.
   ============================================================================ */

/* ============================================================================
   FONTS
   ============================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================================================
   DESIGN TOKENS - Professional Tech Palette
   ============================================================================ */

:root {
  /* Backgrounds - Clean Professional */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-tertiary: #F1F3F5;
  --bg-code: #F8F9FA;

  /* Text Colors */
  --text-primary: #0A0A0A;
  --text-secondary: #4A5568;
  --text-muted: #718096;
  --text-inverse: #FFFFFF;

  /* Brand Colors - Professional Blue/Purple */
  --brand-primary: #2563EB;       /* Professional blue - trust */
  --brand-primary-dark: #1D4ED8;  /* Hover state */
  --brand-primary-light: #3B82F6; /* Lighter variant */

  --brand-secondary: #7C3AED;     /* Innovation purple - AI */
  --brand-secondary-dark: #6D28D9;
  --brand-secondary-light: #8B5CF6;

  --brand-accent: #0891B2;        /* Cyan - technical */
  --brand-accent-dark: #0E7490;

  /* Functional Colors */
  --success: #059669;             /* EU compliance green */
  --warning: #D97706;
  --error: #DC2626;
  --info: #0284C7;

  /* Neutral Palette */
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;

  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", Consolas, monospace;

  /* Type Scale (Major Third - 1.25) */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */

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

  /* Layout */
  --max-width: 1280px;
  --max-width-narrow: 768px;
  --max-width-wide: 1440px;

  /* Borders */
  --border-subtle: 1px solid var(--gray-200);
  --border-default: 1px solid var(--gray-300);
  --border-bold: 2px solid var(--gray-400);

  /* Shadows - Precise & Professional */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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-brand: 0 10px 30px -5px rgba(37, 99, 235, 0.2);

  /* Border Radius */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================================
   RESET & BASE
   ============================================================================ */

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--text-5xl); font-weight: 800; }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); font-weight: 600; }
h4 { font-size: var(--text-2xl); font-weight: 600; }
h5 { font-size: var(--text-xl); font-weight: 600; }
h6 { font-size: var(--text-lg); font-weight: 600; }

p {
  margin-bottom: var(--space-6);
  color: var(--text-secondary);
  line-height: 1.7;
}

.lead {
  font-size: var(--text-2xl);
  line-height: 1.5;
  color: var(--text-secondary);
  font-weight: 300;
}

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

strong {
  font-weight: 600;
  color: var(--text-primary);
}

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

a:hover {
  color: var(--brand-primary-dark);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--gray-100);
  padding: 0.2em 0.5em;
  border-radius: var(--radius-sm);
  color: var(--brand-secondary);
  font-weight: 500;
}

pre {
  background: var(--gray-50);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: var(--border-subtle);
  overflow-x: auto;
  margin: var(--space-8) 0;
}

pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

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

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

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

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

.section-sm {
  padding: var(--space-16) 0;
}

/* ============================================================================
   HEADER
   ============================================================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: var(--border-subtle);
  box-shadow: var(--shadow-xs);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) 0;
}

.logo {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo-accent {
  color: var(--brand-primary);
}

.nav-links {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.nav-link {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-base);
  position: relative;
}

.nav-link:hover {
  color: var(--brand-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-primary);
  transition: width var(--transition-base);
}

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

/* ============================================================================
   HERO
   ============================================================================ */

.hero {
  padding: var(--space-24) 0;
  background: linear-gradient(to bottom, var(--gray-50), var(--bg-primary));
}

.hero-eyebrow {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-primary);
  margin-bottom: var(--space-4);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-2xl);
  line-height: 1.5;
  color: var(--text-secondary);
  font-weight: 300;
  margin-bottom: var(--space-8);
  max-width: 700px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--brand-primary);
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--brand-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-brand);
  color: var(--text-inverse);
}

.btn-secondary {
  background: var(--brand-secondary);
  color: var(--text-inverse);
}

.btn-secondary:hover {
  background: var(--brand-secondary-dark);
  transform: translateY(-1px);
  box-shadow: 0 10px 30px -5px rgba(124, 58, 237, 0.3);
  color: var(--text-inverse);
}

.btn-outline {
  background: transparent;
  color: var(--brand-primary);
  border: 2px solid var(--brand-primary);
}

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-4);
}

.btn-ghost:hover {
  color: var(--brand-primary);
}

/* ============================================================================
   CARDS
   ============================================================================ */

.card {
  background: var(--bg-primary);
  border: var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-slow);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--gray-300);
}

.card-highlight {
  border: 2px solid var(--brand-primary);
  box-shadow: var(--shadow-brand);
}

/* Service Cards */
.service-card {
  background: var(--bg-primary);
  border: var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

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

.service-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  display: block;
}

.service-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.service-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.service-meta {
  font-size: var(--text-sm);
  color: var(--text-muted);
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

/* ============================================================================
   METRICS / STATS
   ============================================================================ */

.metrics-bar {
  background: var(--bg-secondary);
  padding: var(--space-12) 0;
  border-top: var(--border-subtle);
  border-bottom: var(--border-subtle);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: var(--text-5xl);
  font-weight: 800;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-2);
}

.metric-label {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

/* ============================================================================
   BADGES & TAGS
   ============================================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--gray-100);
  border: var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.badge-primary {
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.3);
  color: var(--brand-primary);
}

.badge-success {
  background: rgba(5, 150, 105, 0.1);
  border-color: rgba(5, 150, 105, 0.3);
  color: var(--success);
}

/* ============================================================================
   FORMS
   ============================================================================ */

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

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

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-4);
  background: var(--bg-primary);
  border: var(--border-default);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--text-primary);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

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

.footer {
  background: var(--gray-50);
  border-top: var(--border-subtle);
  padding: var(--space-16) 0 var(--space-8);
  margin-top: var(--space-24);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-title {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

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

.footer-links li {
  margin-bottom: var(--space-3);
}

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--text-base);
  transition: color var(--transition-base);
}

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

.footer-bottom {
  border-top: var(--border-subtle);
  padding-top: var(--space-8);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--text-muted);
}

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

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

.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.grid { display: grid; }
.flex { display: flex; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

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

.fade-in {
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  opacity: 0;
}

.fade-in-delay-1 { animation-delay: 100ms; }
.fade-in-delay-2 { animation-delay: 200ms; }
.fade-in-delay-3 { animation-delay: 300ms; }

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

@media (max-width: 768px) {
  :root {
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
  }

  .nav-links {
    gap: var(--space-4);
  }

  .section {
    padding: var(--space-16) 0;
  }
}