/* ═══════════════════════════════════════════════════════════════════════════
   Reaktionszeit messen – Styles
   ═══════════════════════════════════════════════════════════════════════════ */

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

:root {
  --bg: #ffffff;
  --card-bg: #ffffff;
  --text: #1a1916;
  --text-dim: #7a7670;
  --accent: #2d5a8e;
  --accent-light: #eef3f9;
  --border: #e0ddd7;
  --shadow: 0 2px 12px rgba(26,25,22,0.08);
  --radius: 12px;

  --color-red: #e74c3c;
  --color-red-bg: #ffc2c2;
  --color-green: #2ecc71;
  --color-green-bg: #a8f0c0;
  --color-blue: #3498db;
  --color-blue-bg: #a8d8f8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card-bg: #111111;
    --text: #e4e2de;
    --text-dim: #9a9590;
    --accent: #6ea8e0;
    --accent-light: #0a1828;
    --border: #1c1c1c;
    --shadow: 0 2px 12px rgba(0,0,0,0.3);

    --color-red-bg: #5a1515;
    --color-green-bg: #155a24;
    --color-blue-bg: #153b5a;
  }
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Lato', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  /* space for sim-nav */
  padding-top: var(--sim-nav-offset, 44px);
  user-select: none;
  -webkit-user-select: none;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Screen Management – jeder Screen scrollt eigenständig
   ═══════════════════════════════════════════════════════════════════════════ */
.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 700px;
  height: 100vh;
  padding: 1.5rem;
  gap: 1.5rem;
  overflow-y: auto;
}

.screen.active {
  display: flex;
}

/* Setup/Ready/Test füllen Viewport OHNE Scrollen */
#screen-setup,
#screen-ready,
#screen-test {
  justify-content: center;
  overflow: hidden;
}

/* Results soll von oben starten und scrollen */
#screen-results {
  justify-content: flex-start;
  height: auto;
  min-height: 100vh;
  padding-bottom: 3rem;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Setup Screen
   ═══════════════════════════════════════════════════════════════════════════ */
.setup-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  width: 100%;
  max-width: 600px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.setup-card h2 {
  font-size: 2.2rem;
  font-weight: 700;
  text-align: center;
  color: var(--accent);
}

.setup-section {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.setup-section label {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-dim);
}

.hand-choices {
  display: flex;
  gap: 1rem;
}

.hand-btn {
  flex: 1;
  padding: 2rem 1rem;
  font-size: 1.8rem;
  font-family: 'Lato', sans-serif;
  font-weight: 600;
  border: 3px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.hand-btn:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.hand-btn.selected {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
  box-shadow: 0 0 0 4px rgba(45,90,142,0.15);
}

.trial-choices {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.trial-btn {
  flex: 1;
  min-width: 90px;
  padding: 1.4rem 0.8rem;
  font-size: 2rem;
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  border: 3px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.trial-btn:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.trial-btn.selected {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
  box-shadow: 0 0 0 4px rgba(45,90,142,0.15);
}

.btn-primary {
  padding: 1.6rem 2.8rem;
  font-size: 1.8rem;
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
  letter-spacing: 0.02em;
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(45,90,142,0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: none;
  transform: none;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Ready Screen
   ═══════════════════════════════════════════════════════════════════════════ */
#screen-ready {
  position: relative;
  padding: 0;
}

/* ── Overlay: Hand vor das Tablett ──────────────────────────────────────── */
.ready-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: fadeIn 0.35s ease-out;
  position: absolute;
  inset: 0;
  padding: 2rem 1.5rem 0;
}

.ready-top {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

.ready-text-big {
  font-size: 5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.ready-arrow {
  font-size: 6rem;
  line-height: 1;
  color: var(--accent);
  animation: arrowBounce 0.8s ease-in-out infinite;
  opacity: 0.8;
}

@keyframes arrowBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(24px); }
}

.ready-target-wrapper {
  margin-top: auto;
  width: 100%;
  padding: 0;
  display: flex;
  justify-content: center;
}

.ready-target {
  width: min(450px, 85vw);
  height: 200px;
  border: 4px dashed var(--accent);
  border-radius: 32px 32px 0 0;
  background: var(--accent-light);
  opacity: 0.5;
  transition: opacity 0.3s;
}

/* ── Go-Text: Los geht's! ───────────────────────────────────────────────── */
.ready-go {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  inset: 0;
  animation: fadeIn 0.3s ease-out;
}

.ready-go-text {
  font-size: 6rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.03em;
  animation: goPop 0.5s ease-out forwards;
}

@keyframes goPop {
  0% { transform: scale(0.2); opacity: 0; }
  60% { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

@media (max-width: 500px) {
  .ready-text-big {
    font-size: 2.8rem;
  }
  .ready-arrow {
    font-size: 4rem;
  }
  .ready-target {
    width: min(350px, 85vw);
    height: 160px;
  }
  .ready-go-text {
    font-size: 3.5rem;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   Test Screen
   ═══════════════════════════════════════════════════════════════════════════ */
#screen-test {
  padding: 0;
  max-width: none;
  position: relative;
  transition: background-color 0.08s;
}

.test-status-bar {
  position: absolute;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 0.6rem 1.6rem;
  border-radius: 30px;
  font-size: 1.1rem;
  font-weight: 600;
  z-index: 10;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.test-message {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  z-index: 5;
  pointer-events: none;
  transition: opacity 0.2s;
}

.test-message.hidden {
  opacity: 0;
}

.test-feedback {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3.5rem;
  font-weight: 700;
  z-index: 15;
  pointer-events: none;
  animation: feedbackPop 0.6s ease-out forwards;
}

@keyframes feedbackPop {
  0% { opacity: 1; transform: translate(-50%, -50%) scale(0.5); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.3); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1); }
}

.test-buttons {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 1.5rem;
  z-index: 10;
}

.color-btn {
  width: 150px;
  height: 150px;
  border: 5px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  cursor: pointer;
  font-size: 2.5rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.1s, box-shadow 0.1s;
  box-shadow: 0 8px 28px rgba(0,0,0,0.35);
  -webkit-tap-highlight-color: transparent;
}

.color-btn:active {
  transform: scale(0.92);
}

.color-btn.red {
  background: var(--color-red);
}

.color-btn.green {
  background: var(--color-green);
}

.color-btn.blue {
  background: var(--color-blue);
}

@media (max-width: 500px) {
  .color-btn {
    width: 110px;
    height: 110px;
    font-size: 1.8rem;
  }
  .test-buttons {
    gap: 0.8rem;
    bottom: 1.5rem;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   Results Screen
   ═══════════════════════════════════════════════════════════════════════════ */
.results-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  width: 100%;
  max-width: min(650px, 92vw);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.results-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  color: var(--accent);
  margin-bottom: 0;
  line-height: 1.3;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 0.6rem;
}

.stat-item {
  background: var(--accent-light);
  border-radius: var(--radius);
  padding: 0.75rem 0.6rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.stat-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
  max-width: 100%;
}

.stat-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-unit {
  font-size: 0.7rem;
  color: var(--text-dim);
}

.chart-container {
  width: 100%;
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 2 / 1;
}

.chart-container canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.times-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.times-table th {
  text-align: left;
  padding: 0.4rem 0.6rem;
  font-weight: 700;
  color: var(--text-dim);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 2px solid var(--border);
}

.times-table td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
}

.times-table tr.error-row td {
  color: var(--color-red);
}

.results-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-secondary {
  flex: 1;
  min-width: 140px;
  padding: 1rem 1.2rem;
  font-size: 1.05rem;
  font-family: 'Lato', sans-serif;
  font-weight: 600;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.btn-restart {
  flex: 0 1 auto;
  padding: 0.7rem 1.4rem;
  font-size: 0.95rem;
  font-family: 'Lato', sans-serif;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
  letter-spacing: 0.02em;
}

.btn-restart:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(45,90,142,0.3);
}

.btn-restart:active {
  transform: translateY(0);
}

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

.screen.active {
  animation: fadeIn 0.35s ease-out;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 700px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 500px) {
  .screen {
    padding: 0.5rem;
    gap: 0.5rem;
  }

  .setup-card {
    padding: 1.2rem;
    gap: 1rem;
  }

  .setup-card h2 {
    font-size: 1.4rem;
  }

  .hand-btn {
    padding: 1rem 0.5rem;
    font-size: 1.1rem;
  }

  .trial-btn {
    padding: 0.8rem 0.4rem;
    font-size: 1.2rem;
    min-width: 55px;
  }

  .btn-primary {
    padding: 1rem 1.2rem;
    font-size: 1.2rem;
  }

  .results-card {
    padding: 0.8rem;
    gap: 0.6rem;
  }

  .results-card h2 {
    font-size: 1.2rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.4rem;
  }

  .stat-item {
    padding: 0.5rem 0.4rem;
  }

  .stat-value {
    font-size: 1.1rem;
  }

  .chart-container {
    aspect-ratio: 3 / 2;
  }

  .results-actions {
    flex-direction: column;
  }
}