/* =========================================
   ERGONOMIE-SIMULATOR — Custom Design System
   Brand: #d5172f (Buttons), #007bbf (Header/Accents)
   Font: Lato / Lato Black (Google Fonts)
   ========================================= */

:root,
[data-theme='light'] {
  --color-bg: #f4f7fb;
  --color-surface: #ffffff;
  --color-surface-2: #f0f4f9;
  --color-border: #d0dce8;
  --color-divider: #e2eaf2;
  --color-text: #1a2535;
  --color-text-muted: #5a6a7e;
  --color-text-faint: #9aabb8;
  --color-text-inverse: #ffffff;

  /* Brand Colors */
  --color-primary: #007bbf;       /* BAuA-Blau – Header, Info */
  --color-primary-hover: #005f96;
  --color-primary-dark: #00507f;
  --color-btn: #d5172f;           /* Button-Rot */
  --color-btn-hover: #b01024;
  --color-btn-active: #8c0c1c;

  /* Risk Colors */
  --color-risk-low: #2e7d32;
  --color-risk-mid: #e65100;
  --color-risk-high: #c62828;

  /* Neutral */
  --color-neutral-50: #f9fafb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-200: #e5e7eb;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.14);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;

  /* Fonts */
  --font-body: 'Lato', Arial, sans-serif;
  --font-display: 'Lato', Arial, sans-serif;

  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme='dark'] {
  --color-bg: #0f1823;
  --color-surface: #172130;
  --color-surface-2: #1e2d40;
  --color-border: #2a3d55;
  --color-divider: #233248;
  --color-text: #d8e5f0;
  --color-text-muted: #7a95b0;
  --color-text-faint: #4a6080;
  --color-text-inverse: #ffffff;
  --color-primary: #3da6e8;
  --color-primary-hover: #2b8ecf;
  --color-primary-dark: #1a76b5;
  --color-btn: #e83050;
  --color-btn-hover: #c91e38;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0f1823;
    --color-surface: #172130;
    --color-surface-2: #1e2d40;
    --color-border: #2a3d55;
    --color-divider: #233248;
    --color-text: #d8e5f0;
    --color-text-muted: #7a95b0;
    --color-text-faint: #4a6080;
    --color-primary: #3da6e8;
    --color-primary-hover: #2b8ecf;
    --color-btn: #e83050;
    --color-btn-hover: #c91e38;
  }
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  min-height: 100dvh;
}
img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
input, button, select { font: inherit; color: inherit; }
h1,h2,h3,h4 { text-wrap: balance; line-height: 1.15; font-weight: 900; font-family: var(--font-display); }
p, li { text-wrap: pretty; }
a { color: var(--color-primary); text-decoration: underline; }
a:hover { color: var(--color-primary-hover); }
button { cursor: pointer; border: none; background: none; }

/* =========================================
   LAYOUT
   ========================================= */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* =========================================
   HEADER
   ========================================= */
.site-header {
  background: var(--color-primary);
  color: white;
  padding: var(--space-4) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.logo-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.logo-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}
.logo-title {
  display: block;
  font-size: var(--text-lg);
  font-weight: 900;
  color: white;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.logo-sub {
  display: block;
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.75);
  font-weight: 400;
}
.theme-toggle {
  color: white;
  opacity: 0.85;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: opacity var(--transition), background var(--transition);
  display: flex;
  align-items: center;
}
.theme-toggle:hover { opacity: 1; background: rgba(255,255,255,0.15); }

/* =========================================
   HERO
   ========================================= */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark, #005090) 100%);
  color: white;
  padding: clamp(var(--space-10), 6vw, var(--space-16)) 0 clamp(var(--space-8), 5vw, var(--space-12));
}
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-xl);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.hero h1 {
  font-size: var(--text-2xl);
  font-weight: 900;
  color: white;
  margin-bottom: var(--space-4);
  max-width: 720px;
}
.hero-sub {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.88);
  max-width: 640px;
  line-height: 1.6;
}

/* =========================================
   MAIN GRID
   ========================================= */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
  align-items: start;
}
@media (max-width: 820px) {
  .main-grid { grid-template-columns: 1fr; }
}

/* =========================================
   CARDS
   ========================================= */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}
.card h2 {
  font-size: var(--text-lg);
  font-weight: 900;
  margin-bottom: var(--space-6);
  color: var(--color-primary);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-btn);
}

/* =========================================
   FORM ELEMENTS
   ========================================= */
.form-group {
  margin-bottom: var(--space-6);
}
.form-group:last-of-type {
  margin-bottom: var(--space-8);
}
label {
  display: block;
  margin-bottom: var(--space-2);
}
.label-text {
  display: block;
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text);
}
.label-hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* SLIDER */
.slider-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
input[type="range"] {
  flex: 1;
  appearance: none;
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-xl);
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 22px;
  height: 22px;
  background: var(--color-btn);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(213,23,47,0.4);
  transition: transform var(--transition);
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  background: var(--color-btn);
  border-radius: 50%;
  border: none;
  cursor: pointer;
}
.slider-output {
  min-width: 52px;
  text-align: center;
  font-weight: 900;
  font-size: var(--text-sm);
  color: var(--color-btn);
  background: color-mix(in srgb, var(--color-btn) 10%, transparent);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
}
.scale-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-1);
}

/* CHIPS */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}
.chip {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-xl);
  border: 2px solid var(--color-border);
  background: var(--color-surface-2);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* RADIO */
.radio-group { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-2); }
.radio-opt {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  font-size: var(--text-sm);
  transition: all var(--transition);
}
.radio-opt:hover { border-color: var(--color-primary); background: color-mix(in srgb, var(--color-primary) 6%, var(--color-surface-2)); }
.radio-opt input[type="radio"]:checked + span { color: var(--color-primary); font-weight: 700; }
.radio-opt input { accent-color: var(--color-btn); }
.radio-opt em { font-size: var(--text-xs); color: var(--color-text-muted); font-style: normal; margin-left: var(--space-1); }

/* CHECKBOXES */
.check-group { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-2); }
.check-opt {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  font-size: var(--text-sm);
  transition: all var(--transition);
}
.check-opt:hover { border-color: var(--color-primary); }
.check-opt input { accent-color: var(--color-btn); width: 16px; height: 16px; }

/* BUTTON */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: var(--color-btn);
  color: white !important;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  font-weight: 900;
  cursor: pointer;
  text-decoration: none;
  width: 100%;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 16px rgba(213,23,47,0.3);
  letter-spacing: 0.02em;
}
.btn-primary:hover {
  background: var(--color-btn-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(213,23,47,0.4);
}
.btn-primary:active { transform: translateY(0); }
.btn-download {
  margin-top: var(--space-6);
  background: var(--color-btn);
}

/* =========================================
   RESULT CARD
   ========================================= */
.result-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  min-height: 280px;
  text-align: center;
  color: var(--color-text-faint);
}
.placeholder-icon { width: 72px; height: 72px; opacity: 0.5; }
.hidden { display: none !important; }

/* METERS */
.risk-meters { display: flex; flex-direction: column; gap: var(--space-5); margin-bottom: var(--space-6); }
.meter-item {}
.meter-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
}
.meter-value {
  font-weight: 900;
  font-size: var(--text-sm);
}
.meter-bar-bg {
  height: 10px;
  background: var(--color-divider);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.meter-bar {
  height: 100%;
  border-radius: var(--radius-xl);
  transition: width 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  background: var(--color-btn);
}
.meter-note {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* OVERALL BOX */
.overall-box {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
  border-left: 4px solid var(--color-btn);
  background: var(--color-surface-2);
}
.overall-icon { font-size: 2rem; flex-shrink: 0; }
.overall-box strong { display: block; font-size: var(--text-base); font-weight: 900; margin-bottom: var(--space-1); }
.overall-box p { font-size: var(--text-sm); color: var(--color-text-muted); }

/* STATUS FARBEN */
.status-low { background: color-mix(in srgb, #2e7d32 15%, transparent); border-color: #2e7d32; }
.status-low .meter-bar { background: #2e7d32; }
.status-low .meter-value { color: #2e7d32; }
.status-mid { background: color-mix(in srgb, #e65100 12%, transparent); border-color: #e65100; }
.status-mid .meter-bar { background: #e65100; }
.status-mid .meter-value { color: #e65100; }
.status-high { background: color-mix(in srgb, #c62828 12%, transparent); border-color: #c62828; }
.status-high .meter-bar { background: #c62828; }
.status-high .meter-value { color: #c62828; }

/* FACT BOX */
.fact-box {
  background: color-mix(in srgb, var(--color-primary) 8%, var(--color-surface-2));
  border: 1px solid color-mix(in srgb, var(--color-primary) 25%, var(--color-border));
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--space-5);
  line-height: 1.6;
}
.fact-box strong { color: var(--color-primary); }

/* MASSNAHMEN */
.massnahmen h3 {
  font-size: var(--text-base);
  font-weight: 900;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.massnahmen-list { display: flex; flex-direction: column; gap: var(--space-2); }
.massnahmen-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-btn);
  font-size: var(--text-sm);
  line-height: 1.5;
}
.massnahmen-list li::before {
  content: '→';
  color: var(--color-btn);
  font-weight: 900;
  flex-shrink: 0;
}

/* =========================================
   WISSENSBLOCK
   ========================================= */
.wissen-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding: clamp(var(--space-10), 5vw, var(--space-16)) 0;
}
.wissen-section h2 {
  font-size: var(--text-xl);
  font-weight: 900;
  margin-bottom: var(--space-8);
  color: var(--color-primary);
}
.wissen-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-5);
}
.wissen-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border-top: 4px solid var(--color-btn);
}
.wissen-zahl {
  font-size: var(--text-xl);
  font-weight: 900;
  color: var(--color-btn);
  margin-bottom: var(--space-3);
  line-height: 1;
}
.wissen-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* =========================================
   FOOTER
   ========================================= */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding: var(--space-12) 0 var(--space-10);
}
.site-footer h3 {
  font-size: var(--text-lg);
  font-weight: 900;
  margin-bottom: var(--space-5);
  color: var(--color-primary);
}
.quellen-list {
  list-style: decimal;
  padding-left: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}
.quellen-list li { font-size: var(--text-sm); color: var(--color-text-muted); }
.quellen-list a { color: var(--color-primary); }
.footer-hinweis {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
}

/* ANIMATIONS */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.result-content { animation: fadeIn 0.4s ease forwards; }

/* FOCUS */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* MOBILE */
@media (max-width: 600px) {
  .header-inner { gap: var(--space-2); }
  .logo-title { font-size: var(--text-base); }
  .card { padding: var(--space-5); }
  .chip { font-size: var(--text-xs); padding: var(--space-1) var(--space-3); }
}