/* ================================================
   BASE – Reset, Custom Properties, Typography, Fonts
   FFW Mantel CSS Framework
   ================================================ */

/* --- Local Font Faces (DSGVO-konform) --- */

@font-face {
  font-family: 'Barlow Condensed';
  src: url('../../fonts/BarlowCondensed-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Barlow Condensed';
  src: url('../../fonts/BarlowCondensed-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Barlow Condensed';
  src: url('../../fonts/BarlowCondensed-ExtraBold.woff2') format('woff2');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../../fonts/Inter-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../../fonts/Inter-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('../../fonts/Inter-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('../../fonts/JetBrainsMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* --- CSS Custom Properties --- */

:root {
  /* Primary – Feuerwehr-Rot */
  --color-primary: #e01a0a;
  --color-primary-light: #ff4436;
  --color-primary-dark: #b01408;
  --color-primary-50: #fef2f1;
  --color-primary-100: #fde3e1;
  --color-primary-200: #fccbc7;
  --color-primary-900: #5c0a04;

  /* Secondary – Blaulicht-Blau */
  --color-secondary: #1a6bff;
  --color-secondary-light: #4d8eff;
  --color-secondary-dark: #0044cc;
  --color-secondary-50: #eef4ff;
  --color-secondary-100: #d9e7ff;
  --color-secondary-900: #002266;

  /* Accent – Signal-Amber */
  --color-accent: #f59e0b;
  --color-accent-light: #fbbf24;
  --color-accent-dark: #d97706;

  /* Neutrals */
  --color-white: #ffffff;
  --color-gray-50: #fafafa;
  --color-gray-100: #f4f4f5;
  --color-gray-200: #e4e4e7;
  --color-gray-300: #d4d4d8;
  --color-gray-400: #a1a1aa;
  --color-gray-500: #71717a;
  --color-gray-600: #52525b;
  --color-gray-700: #3f3f46;
  --color-gray-800: #27272a;
  --color-gray-900: #18181b;
  --color-black: #09090b;

  /* Semantic */
  --color-success: #16a34a;
  --color-warning: #ca8a04;
  --color-error: #dc2626;
  --color-info: var(--color-secondary);

  /* Backgrounds */
  --bg-page: var(--color-white);
  --bg-surface: var(--color-gray-50);
  --bg-surface-raised: var(--color-white);
  --bg-inverse: var(--color-gray-900);

  /* Text */
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-muted: var(--color-gray-400);
  --text-inverse: var(--color-white);

  /* Borders */
  --border-default: var(--color-gray-200);
  --border-strong: var(--color-gray-400);
  --border-focus: var(--color-secondary);

  /* Fonts */
  --font-family-heading: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --font-family-body: 'Inter', system-ui, sans-serif;
  --font-family-mono: 'JetBrains Mono', monospace;

  /* Font Sizes – fluid (clamp) */
  --font-size-xs:   clamp(0.75rem, 0.71rem + 0.19vw, 0.875rem);
  --font-size-sm:   clamp(0.875rem, 0.83rem + 0.19vw, 1rem);
  --font-size-base: clamp(1rem, 0.95rem + 0.28vw, 1.125rem);
  --font-size-lg:   clamp(1.125rem, 1.03rem + 0.47vw, 1.375rem);
  --font-size-xl:   clamp(1.375rem, 1.16rem + 1.03vw, 1.875rem);
  --font-size-2xl:  clamp(1.75rem, 1.39rem + 1.78vw, 2.625rem);
  --font-size-3xl:  clamp(2.25rem, 1.65rem + 2.99vw, 3.75rem);
  --font-size-4xl:  clamp(3rem, 2.06rem + 4.67vw, 5.25rem);

  /* Spacing (8px grid) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --space-10: 4rem;
  --space-12: 6rem;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-glow-blue: 0 0 20px rgb(26 107 255 / 0.3), 0 0 60px rgb(26 107 255 / 0.1);
  --shadow-glow-red: 0 0 20px rgb(224 26 10 / 0.3), 0 0 60px rgb(224 26 10 / 0.1);

  /* Transitions */
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

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

/* --- Dark Mode --- */

html[data-theme="dark"] {
  --color-primary: #ff4436;
  --color-primary-light: #ff6b5e;
  --color-primary-dark: #e01a0a;
  --color-secondary: #4d8eff;
  --color-secondary-light: #80aeff;
  --color-accent: #fbbf24;
  --bg-page: #0E121F;
  --bg-surface: #131825;
  --bg-surface-raised: #181d2c;
  --bg-inverse: var(--color-gray-100);
  --text-primary: #eeeef2;
  --text-secondary: #9ca3b8;
  --text-muted: #586070;
  --text-inverse: var(--color-gray-900);
  --border-default: #222838;
  --border-strong: #2e3548;
}

/* --- Reset --- */

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

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

body {
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-page);
  transition: background var(--duration-slow) var(--ease-out),
              color var(--duration-slow) var(--ease-out);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration-skip-ink: auto;
}

/* --- Typography base classes --- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

/* --- Accessibility --- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
}

.u-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;
}

.skip-link:focus {
  position: fixed;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 9999;
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-white);
  clip: auto;
  width: auto;
  height: auto;
  border-radius: var(--radius-md);
  font-family: var(--font-family-heading);
  font-weight: 700;
  text-decoration: none;
}

/* Windows High Contrast Mode / Forced Colors */
@media (forced-colors: active) {
  :focus-visible {
    outline: 3px solid LinkText;
  }

  .btn {
    border: 2px solid ButtonText;
  }

  .card {
    border: 1px solid CanvasText;
  }

  .badge {
    border: 1px solid CanvasText;
  }
}

/* Selection */
::selection {
  background: var(--color-primary);
  color: var(--color-white);
}