/* ============================================================
   MIKRA WEBTEC — DESIGN SYSTEM
   Premium Web Agency | DACH + International
   ============================================================ */

/* --- FONTS (Lokal, DSGVO-konform) --- */
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/inter/Inter-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/inter/Inter-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/inter/Inter-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/inter/Inter-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'InterDisplay';
  src: url('/assets/fonts/inter/InterDisplay-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'InterDisplay';
  src: url('/assets/fonts/inter/InterDisplay-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* --- CSS CUSTOM PROPERTIES --- */
:root {
  /* Colors — Primary */
  --c-navy: #0F172A;
  --c-navy-light: #1E293B;
  --c-navy-lighter: #334155;

  /* Colors — Accent */
  --c-blue: #3B82F6;
  --c-blue-hover: #2563EB;
  --c-blue-light: #60A5FA;
  --c-blue-glow: rgba(59, 130, 246, 0.15);
  --c-blue-subtle: rgba(59, 130, 246, 0.08);

  /* Colors — Neutral */
  --c-white: #FFFFFF;
  --c-gray-50: #F8FAFC;
  --c-gray-100: #F1F5F9;
  --c-gray-200: #E2E8F0;
  --c-gray-300: #CBD5E1;
  --c-gray-400: #94A3B8;
  --c-gray-500: #64748B;
  --c-gray-600: #475569;
  --c-gray-700: #334155;
  --c-gray-800: #1E293B;
  --c-gray-900: #0F172A;

  /* Colors — Semantic */
  --c-success: #10B981;
  --c-success-light: #D1FAE5;
  --c-warning: #F59E0B;
  --c-error: #EF4444;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'InterDisplay', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Font Sizes — Fluid (clamp) */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-3xl: clamp(1.5rem, 1.2rem + 1.5vw, 1.875rem);
  --text-4xl: clamp(1.875rem, 1.4rem + 2.4vw, 2.5rem);
  --text-5xl: clamp(2.25rem, 1.5rem + 3.75vw, 3.5rem);
  --text-6xl: clamp(2.75rem, 1.6rem + 5.75vw, 4.5rem);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Section Spacing (vertical padding) */
  --section-py: clamp(3rem, 2rem + 5vw, 6rem);

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-px: clamp(1rem, 0.5rem + 2.5vw, 2rem);

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 6px 16px rgba(0,0,0,0.06);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--c-gray-700);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.2;
  color: var(--c-navy);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

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

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

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

.section--dark {
  background: var(--c-navy);
  color: var(--c-gray-300);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--c-white);
}

.section--gray {
  background: var(--c-gray-50);
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: var(--space-3xl);
}

.section__label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.section__title {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.section__subtitle {
  font-size: var(--text-lg);
  color: var(--c-gray-500);
  line-height: 1.6;
}

.section--dark .section__subtitle {
  color: var(--c-gray-400);
}

/* --- TYPOGRAPHY --- */
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.text-4xl { font-size: var(--text-4xl); }
.text-5xl { font-size: var(--text-5xl); }
.text-6xl { font-size: var(--text-6xl); }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-navy { color: var(--c-navy); }
.text-blue { color: var(--c-blue); }
.text-gray { color: var(--c-gray-500); }
.text-white { color: var(--c-white); }
.text-center { text-align: center; }

/* --- GRID --- */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }
}

/* --- FLEX UTILITIES --- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* --- VISUALLY HIDDEN (Accessibility) --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}