/* ═══════════════════════════════════════════════
   FHT v2.0.0 – Design System
   Dark-first, iPad-optimiert, Outdoor-tauglich
   ═══════════════════════════════════════════════ */

:root {
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', system-ui, sans-serif;
  --font-size-body: 18px;
  --font-size-sm: 15px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 40px;

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Touch */
  --touch-target: 48px;

  /* Transitions */
  --transition: 200ms ease;
}

/* ─── Dark Mode (Standard) ─── */
[data-theme="dark"] {
  --bg-primary: #0D0D0D;
  --bg-surface: #1A2332;
  --bg-surface-hover: #233044;
  --bg-surface-active: #2A3A52;
  --bg-elevated: #1E293B;
  --bg-input: #0F1923;

  --color-primary: #64B5F6;
  --color-primary-hover: #90CAF9;
  --color-accent: #FFB74D;
  --color-accent-hover: #FFCC80;
  --color-success: #81C784;
  --color-danger: #EF5350;
  --color-warning: #FFB74D;

  --text-primary: #F0F0F0;
  --text-secondary: #9E9E9E;
  --text-muted: #616161;
  --text-inverse: #0D0D0D;

  --border-color: #2A3A52;
  --border-focus: #64B5F6;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.6);
}

/* ─── Light Mode ─── */
[data-theme="light"] {
  --bg-primary: #FFFFFF;
  --bg-surface: #F0F7FF;
  --bg-surface-hover: #E3EFFA;
  --bg-surface-active: #D6E7F5;
  --bg-elevated: #FFFFFF;
  --bg-input: #FFFFFF;

  --color-primary: #1565C0;
  --color-primary-hover: #1976D2;
  --color-accent: #E65100;
  --color-accent-hover: #F57C00;
  --color-success: #2E7D32;
  --color-danger: #C62828;
  --color-warning: #E65100;

  --text-primary: #1A1A1A;
  --text-secondary: #616161;
  --text-muted: #9E9E9E;
  --text-inverse: #FFFFFF;

  --border-color: #D0DEE8;
  --border-focus: #1565C0;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
}

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

html {
  font-size: var(--font-size-body);
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

#app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

/* ─── Focus Ring ─── */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* ─── Utility Classes ─── */
.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;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-surface) 25%, var(--bg-surface-hover) 50%, var(--bg-surface) 75%);
  background-size: 200% 100%;
  animation: skeleton 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}