/* ============================================================
   CSS CUSTOM PROPERTIES — THEME TOKENS
   ============================================================ */
:root {
  --bg:          #0d0d0f;
  --bg2:         #141418;
  --bg3:         #1c1c22;
  --surface:     #1e1e26;
  --border:      #2a2a36;
  --border2:     #3a3a4a;
  --text:        #e8e8f0;
  --text-muted:  #6b6b80;
  --text-dim:    #3a3a50;
  --accent:      #f5a623;
  --accent2:     #ff6b35;
  --accent-glow: rgba(245,166,35,0.18);
  --correct:     #4ade80;
  --incorrect:   #f87171;
  --correct-bg:  rgba(74,222,128,0.08);
  --incorrect-bg:rgba(248,113,113,0.15);
  --cursor-color:#f5a623;
  --radius:      10px;
  --radius-lg:   16px;
  --shadow:      0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 48px rgba(0,0,0,0.6);
  --font-mono:   'JetBrains Mono', 'Fira Code', monospace;
  --font-display:'Syne', sans-serif;
  --transition:  0.22s cubic-bezier(0.4,0,0.2,1);
}
[data-theme="light"] {
  --bg:          #f4f3ef;
  --bg2:         #eae9e3;
  --bg3:         #dddcd6;
  --surface:     #ffffff;
  --border:      #d0cfc8;
  --border2:     #bab9b0;
  --text:        #1a1a24;
  --text-muted:  #6b6a75;
  --text-dim:    #bbb9c8;
  --accent:      #c97f00;
  --accent2:     #e05000;
  --accent-glow: rgba(201,127,0,0.12);
  --correct:     #16a34a;
  --incorrect:   #dc2626;
  --correct-bg:  rgba(22,163,74,0.08);
  --incorrect-bg:rgba(220,38,38,0.1);
  --cursor-color:#c97f00;
  --shadow:      0 4px 24px rgba(0,0,0,0.1);
  --shadow-lg:   0 8px 48px rgba(0,0,0,0.15);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-mono);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

/* ============================================================
   BACKGROUND TEXTURE
   ============================================================ */
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(245,166,35,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 110%, rgba(255,107,53,0.04) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ============================================================
   LAYOUT
   ============================================================ */
.app-wrapper {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* ============================================================
   HEADER
   ============================================================ */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--border);
}
.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 32px; height: 32px;
  background: var(--accent);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #000;
  font-size: 0.9rem;
}
.logo span { color: var(--accent); }
.header-actions { display: flex; gap: 10px; align-items: center; }

/* ============================================================
   BUTTONS — BASE
   ============================================================ */
.btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px;
  text-transform: uppercase;
}
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--border2);
  color: var(--text);
  background: var(--bg3);
}
.btn-accent {
  background: var(--accent);
  color: #000;
  font-weight: 700;
}
.btn-accent:hover {
  background: var(--accent2);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-icon { padding: 8px; border-radius: 8px; }
.btn:active { transform: scale(0.97); }
.icon-svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ============================================================
   CONTROLS BAR
   ============================================================ */
.controls-bar {
  display: flex;
  gap: 12px;
  padding: 20px 0 16px;
  flex-wrap: wrap;
  align-items: center;
}
.control-group {
  display: flex;
  gap: 4px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
}
.pill-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: none;
  cursor: pointer;
  border-radius: 7px;
  padding: 6px 13px;
  background: transparent;
  color: var(--text-muted);
  transition: all var(--transition);
  text-transform: uppercase;
}
.pill-btn:hover { color: var(--text); background: var(--bg3); }
.pill-btn.active {
  background: var(--accent);
  color: #000;
  font-weight: 700;
}
.controls-spacer { flex: 1; }
.sound-toggle {
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  display: flex; align-items: center; gap: 6px;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.sound-toggle:hover { color: var(--text); border-color: var(--border2); }
.sound-toggle.on { color: var(--accent); border-color: var(--accent); }

/* ============================================================
   STATS BAR (live)
   ============================================================ */
.stats-live {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  transition: border-color var(--transition);
}
.stat-card:hover { border-color: var(--border2); }
.stat-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  font-family: var(--font-display);
}
.stat-value.accent { color: var(--accent); }
.stat-unit {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.progress-wrap {
  height: 3px;
  background: var(--bg3);
  border-radius: 4px;
  margin-bottom: 16px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 4px;
  width: 0%;
  transition: width 0.5s linear;
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ============================================================
   TYPING AREA
   ============================================================ */
.typing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
  margin-bottom: 14px;
  position: relative;
  box-shadow: var(--shadow);
  transition: border-color var(--transition);
  min-height: 140px;
}
.typing-card.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow); }
.typing-card.error  { border-color: var(--incorrect); }

/* The paragraph display */
#text-display {
  font-family: var(--font-mono);
  font-size: 1.12rem;
  line-height: 2;
  letter-spacing: 0.02em;
  user-select: none;
  word-break: break-word;
  position: relative;
}
#text-display .char {
  position: relative;
  transition: color 0.08s;
}
#text-display .char.correct { color: var(--correct); }
#text-display .char.incorrect {
  color: var(--incorrect);
  background: var(--incorrect-bg);
  border-radius: 2px;
}
#text-display .char.pending { color: var(--text-dim); }
#text-display .char.cursor::after {
  content: '';
  position: absolute;
  left: 0; bottom: -1px;
  width: 100%; height: 2px;
  background: var(--cursor-color);
  border-radius: 1px;
  animation: blink 1s step-end infinite;
  box-shadow: 0 0 6px var(--cursor-color);
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

/* Hidden input captures keystrokes */
#hidden-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px; height: 1px;
  top: 0; left: 0;
}

/* Click-to-start overlay */
.start-overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-lg);
  background: rgba(13,13,15,0.6);
  backdrop-filter: blur(2px);
  cursor: pointer;
  transition: opacity var(--transition);
  z-index: 10;
}
[data-theme="light"] .start-overlay { background: rgba(244,243,239,0.7); }
.start-prompt {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex; align-items: center; gap: 10px;
  border: 1px solid var(--border);
  padding: 14px 24px;
  border-radius: var(--radius);
  transition: all var(--transition);
  background: var(--bg2);
}
.start-overlay:hover .start-prompt {
  border-color: var(--accent);
  color: var(--accent);
}

/* ============================================================
   ACTION ROW
   ============================================================ */
.action-row {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

/* ============================================================
   RESULTS MODAL
   ============================================================ */
.results-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.results-overlay.visible { opacity: 1; pointer-events: all; }
.results-card {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  max-width: 560px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.results-overlay.visible .results-card { transform: translateY(0) scale(1); }
.results-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
  display: flex; align-items: center; gap: 10px;
}
.results-subtitle {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 28px;
}
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.result-item {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  text-align: center;
}
.result-item.highlight {
  border-color: var(--accent);
  background: var(--accent-glow);
}
.result-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  margin-bottom: 4px;
}
.result-item.highlight .result-num { color: var(--accent); }
.result-lbl {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 700;
}
.results-actions {
  display: flex; gap: 10px; flex-wrap: wrap;
}
.results-actions .btn { flex: 1; justify-content: center; padding: 12px; }

/* Last score banner */
.last-score-bar {
  background: var(--bg2);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 16px;
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.last-score-bar.visible { opacity: 1; pointer-events: all; }
.last-score-bar strong { color: var(--accent); font-weight: 700; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  border-top: 1px solid var(--border);
  padding: 20px 0 0;
  font-size: 0.7rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed;
  bottom: 30px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--accent);
  color: #000;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 10px 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  z-index: 200;
  white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.typing-card { animation: fadeIn 0.4s ease both; }
.stats-live .stat-card { animation: fadeIn 0.4s ease both; }
.stat-card:nth-child(1) { animation-delay: 0.05s; }
.stat-card:nth-child(2) { animation-delay: 0.1s;  }
.stat-card:nth-child(3) { animation-delay: 0.15s; }
.stat-card:nth-child(4) { animation-delay: 0.2s;  }

/* Shake on error */
@keyframes shake { 0%,100%{transform:none} 25%{transform:translateX(-4px)} 75%{transform:translateX(4px)} }
.shake { animation: shake 0.2s ease; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 640px) {
  .stats-live { grid-template-columns: repeat(2, 1fr); }
  .results-grid { grid-template-columns: repeat(2, 1fr); }
  .typing-card { padding: 20px; }
  #text-display { font-size: 1rem; }
  .logo { font-size: 1.2rem; }
  .controls-bar { gap: 8px; }
  .results-card { padding: 24px 20px; }
  header { padding: 18px 0 16px; }
  .stat-value { font-size: 1.3rem; }
}
@media (max-width: 400px) {
  .stats-live { grid-template-columns: 1fr 1fr; }
  .pill-btn { padding: 6px 9px; font-size: 0.7rem; }
}