/* style.css */
:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --text: #1a1d23;
  --text-muted: #5c6578;
  --accent: #0d9488;
  --accent-hover: #0f766e;
  --correct: #16a34a;
  --incorrect: #dc2626;
  --border: #e2e8f0;
  --shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
  --radius: 12px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

html {
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 1.5rem;
}

.app {
  width: 100%;
  max-width: 860px;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* Header */
.header {
  text-align: center;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 0.35rem;
}

.logo-icon {
  color: var(--accent);
}

.header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* HUD */
.hud {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.hud-item {
  text-align: center;
}

.hud-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.hud-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

/* Typing Section */
.typing-section {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.quote-container {
  position: relative;
}

.loading {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.quote-text {
  font-size: 1.25rem;
  line-height: 1.7;
  letter-spacing: 0.01em;
  word-wrap: break-word;
  user-select: none;
}

.quote-text .char {
  transition: color 0.08s ease;
}

.quote-text .char.correct {
  color: var(--correct);
}

.quote-text .char.incorrect {
  color: var(--incorrect);
  text-decoration: underline;
  text-decoration-color: var(--incorrect);
}

.quote-text .char.current {
  background: rgba(13, 148, 136, 0.15);
  border-radius: 2px;
}

.quote-text .char.untouched {
  color: #334155;
}

.hint {
  margin-top: 1.25rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Results */
.results {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  animation: fadeIn 0.35s ease;
}

.results[hidden] {
  display: none;
}

.results h2 {
  text-align: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
}

.results-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.result-card {
  background: var(--bg);
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
  border: 1px solid var(--border);
}

.result-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

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

.charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}

.chart-wrapper h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--text-muted);
  text-align: center;
}

.chart-container {
  background: var(--bg);
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 0.75rem;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chart-container svg {
  width: 100%;
  height: auto;
  max-height: 220px;
}

/* Buttons */
.btn {
  display: block;
  margin: 0 auto;
  padding: 0.7rem 1.8rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
}

.btn.primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.35);
}

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

/* Footer */
.footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

/* Responsive */
@media (max-width: 640px) {
  body {
    padding: 1rem;
  }

  .header h1 {
    font-size: 1.4rem;
  }

  .hud {
    padding: 0.85rem 0.75rem;
  }

  .hud-value {
    font-size: 1.3rem;
  }

  .quote-text {
    font-size: 1.1rem;
  }

  .results-summary,
  .charts {
    grid-template-columns: 1fr;
  }

  .charts {
    gap: 1.25rem;
  }
}