/* ==========================================================================
   ZFDV - Zentrum für Datenverarbeitung GmbH | Zürich, Switzerland
   High-Performance Enterprise Architecture Design System
   ========================================================================== */

:root {
  /* Color Palette - Swiss Datacenter & FinTech */
  --primary-navy: #0A1C36;
  --secondary-navy: #0F274A;
  --dark-surface: #06101E;
  --deep-bg: #040A14;
  --accent-cyan: #00A8E8;
  --accent-teal: #00C49F;
  --accent-emerald: #10B981;
  --accent-blue: #0077B6;
  --swiss-red: #D52B1E;

  /* Light Mode Defaults */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-tertiary: #EDF2F7;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --bg-glass: rgba(255, 255, 255, 0.85);

  --text-primary: #0A1C36;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-inverted: #FFFFFF;

  --border-subtle: #E2E8F0;
  --border-medium: #CBD5E1;
  --border-focus: #00A8E8;

  --shadow-sm: 0 1px 3px rgba(10, 28, 54, 0.05);
  --shadow-md: 0 4px 14px rgba(10, 28, 54, 0.08);
  --shadow-lg: 0 10px 30px rgba(10, 28, 54, 0.12);
  --shadow-glow: 0 0 24px rgba(0, 168, 232, 0.2);

  --code-bg: #0A192F;
  --code-text: #E2E8F0;

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

  /* Spacing & Layout */
  --container-max: 1280px;
  --container-pad: 24px;
  --header-height: 80px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-pill: 9999px;
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Overrides */
[data-theme="dark"] {
  --bg-primary: #060D17;
  --bg-secondary: #0A1626;
  --bg-tertiary: #0F2038;
  --bg-card: #0D1C30;
  --bg-card-hover: #122540;
  --bg-glass: rgba(10, 22, 38, 0.85);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-inverted: #0A1C36;

  --border-subtle: #192D48;
  --border-medium: #223D61;
  --border-focus: #00C49F;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 28px rgba(0, 196, 159, 0.25);

  --code-bg: #050B14;
  --code-text: #E0F2FE;
}

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

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

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

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

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

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

/* Typography Helpers */
.title-hero {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
}

.title-section {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 16px;
}

.title-sub {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.lead-text {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 760px;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background-color: rgba(0, 168, 232, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 168, 232, 0.25);
  margin-bottom: 16px;
}

[data-theme="dark"] .badge-tag {
  background-color: rgba(0, 196, 159, 0.12);
  color: var(--accent-teal);
  border-color: rgba(0, 196, 159, 0.3);
}

.badge-swiss {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(213, 43, 30, 0.1);
  color: #D52B1E;
  border: 1px solid rgba(213, 43, 30, 0.25);
}

.section-padding {
  padding-top: 96px;
  padding-bottom: 96px;
}

.section-header {
  text-align: center;
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 64px;
}

/* Subtle Enterprise Grid Background (No tacky AI clouds) */
.bg-grid-pattern {
  background-size: 36px 36px;
  background-image: 
    linear-gradient(to right, rgba(0, 168, 232, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 168, 232, 0.04) 1px, transparent 1px);
}

[data-theme="dark"] .bg-grid-pattern {
  background-image: 
    linear-gradient(to right, rgba(0, 196, 159, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 196, 159, 0.05) 1px, transparent 1px);
}

/* Utilities */
.text-center { text-align: center; }
.text-cyan { color: var(--accent-cyan); }
.text-teal { color: var(--accent-teal); }
.text-emerald { color: var(--accent-emerald); }
.text-muted { color: var(--text-muted); }
.font-mono { font-family: var(--font-mono); }
.weight-bold { font-weight: 700; }

.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;
}