:root {
  --bg: #323437;
  --main: #e2b714;
  --sub: #646669;
  --sub-alt: #2c2e31;
  --text: #d1d0c5;
  --text-alt: #b8b7ad;
  --error: #ca4754;
  --error-extra: #7e2a33;
  --correct: #d1d0c5;
  --caret: #e2b714;
  --font: 'Roboto Mono', 'Consolas', 'Courier New', monospace;
  --word-font-size: 1.6rem;
  --radius: 8px;
}

[data-theme="light"] {
  --bg: #f5f5f5;
  --main: #e2b714;
  --sub: #a0a0a0;
  --sub-alt: #eaeaea;
  --text: #3a3a3a;
  --text-alt: #5a5a5a;
  --error: #ca4754;
  --error-extra: #e8a0a8;
  --correct: #3a3a3a;
  --caret: #e2b714;
}

[data-theme="serika"] {
  --bg: #323437;
  --main: #e2b714;
  --sub: #646669;
  --text: #d1d0c5;
  --caret: #e2b714;
}

[data-theme="nord"] {
  --bg: #2e3440;
  --main: #88c0d0;
  --sub: #4c566a;
  --sub-alt: #3b4252;
  --text: #eceff4;
  --text-alt: #d8dee9;
  --error: #bf616a;
  --error-extra: #7b3a40;
  --correct: #eceff4;
  --caret: #88c0d0;
}

[data-theme="dracula"] {
  --bg: #282a36;
  --main: #bd93f9;
  --sub: #6272a4;
  --sub-alt: #343746;
  --text: #f8f8f2;
  --text-alt: #e0e0da;
  --error: #ff5555;
  --error-extra: #8b2a2a;
  --correct: #f8f8f2;
  --caret: #bd93f9;
}

[data-theme="gruvbox"] {
  --bg: #282828;
  --main: #fabd2f;
  --sub: #928374;
  --sub-alt: #3c3836;
  --text: #ebdbb2;
  --text-alt: #d5c4a1;
  --error: #fb4934;
  --error-extra: #9d2a1f;
  --correct: #ebdbb2;
  --caret: #fabd2f;
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  transition: background .2s, color .2s;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
}

a { color: var(--sub); text-decoration: none; transition: color .15s; }
a:hover { color: var(--text); }

.topbar {
  width: 100%;
  max-width: 1200px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
}

.brand {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--main);
  letter-spacing: -0.5px;
}

.topbar nav {
  display: flex;
  gap: 1.2rem;
  align-items: center;
}

.topbar nav a, .topbar nav button {
  background: none;
  border: none;
  color: var(--sub);
  font-family: var(--font);
  font-size: 1rem;
  cursor: pointer;
  transition: color .15s;
}
.topbar nav a:hover, .topbar nav button:hover,
.topbar nav a.active { color: var(--main); }

main.test-page {
  width: 100%;
  max-width: 1100px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.live-stats {
  display: flex;
  gap: 2.5rem;
  justify-content: center;
  min-height: 3rem;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}
.stat-val {
  font-size: 2rem;
  color: var(--main);
  font-weight: 700;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--sub);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 0.3rem;
}

.words-wrapper {
  height: 12rem;
  overflow: hidden;
  position: relative;
  padding: 0.5rem 0;
  border-radius: var(--radius);
}

.words {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  font-size: var(--word-font-size);
  line-height: 1.5;
  transition: transform 0.08s linear;
  user-select: none;
  color: var(--sub);
}

.word {
  display: inline-flex;
  margin-right: 0.6em;
  white-space: nowrap;
}

.space { display: inline-block; width: 0; }

.char {
  position: relative;
  color: inherit;
}
.char.correct { color: var(--correct); }
.char.incorrect { color: var(--error); }
.char.extra { color: var(--error-extra); }

.char.current::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.1em;
  bottom: 0.1em;
  width: 2px;
  background: var(--caret);
  animation: blink 1s step-end infinite;
  border-radius: 1px;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  50.01%, 100% { opacity: 0; }
}

.test-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
}

.mode-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  align-items: center;
}

.mode-group {
  display: flex;
  gap: 0.3rem;
  padding: 0.3rem;
  background: var(--sub-alt);
  border-radius: var(--radius);
}

.mode-btn {
  background: none;
  border: none;
  color: var(--sub);
  font-family: var(--font);
  font-size: 0.9rem;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
  transition: color .15s, background .15s;
}
.mode-btn:hover { color: var(--text); }
.mode-btn.active {
  color: var(--bg);
  background: var(--main);
  font-weight: 700;
}

.toggle-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  justify-content: center;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--sub);
  font-size: 0.85rem;
  cursor: pointer;
  user-select: none;
}
.toggle input { accent-color: var(--main); }

.hint {
  color: var(--sub);
  font-size: 0.85rem;
  text-align: center;
  margin-top: 0.5rem;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--sub-alt);
  border: 1px solid var(--sub);
  border-radius: 12px;
  padding: 1.5rem;
  width: 90%;
  max-width: 720px;
  max-height: 85vh;
  overflow-y: auto;
  color: var(--text);
  font-family: var(--font);
}

.modal h2 {
  color: var(--main);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.modal .row {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}

.modal label {
  color: var(--sub);
  font-size: 0.85rem;
}

.modal select, .modal input, .modal textarea {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--sub);
  border-radius: 6px;
  padding: 0.5rem 0.7rem;
  font-family: var(--font);
  font-size: 0.9rem;
}

.modal textarea {
  width: 100%;
  min-height: 80px;
  resize: vertical;
}

.modal button {
  background: var(--main);
  color: var(--bg);
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-family: var(--font);
  font-weight: 700;
  cursor: pointer;
  font-size: 0.9rem;
}
.modal button.secondary {
  background: var(--sub-alt);
  color: var(--text);
  border: 1px solid var(--sub);
}
.modal button.danger {
  background: var(--error);
  color: #fff;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
}
.result-item {
  background: var(--bg);
  border-radius: 8px;
  padding: 0.8rem;
  text-align: center;
}
.result-item .val {
  font-size: 1.8rem;
  color: var(--main);
  font-weight: 700;
}
.result-item .lbl {
  font-size: 0.7rem;
  color: var(--sub);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.results-chart {
  width: 100%;
  height: 180px;
  background: var(--bg);
  border-radius: 8px;
  margin-bottom: 1rem;
}

/* Sentences page */
.page {
  width: 100%;
  max-width: 900px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.page h1 {
  color: var(--main);
  font-size: 1.6rem;
}
.card {
  background: var(--sub-alt);
  border: 1px solid var(--sub);
  border-radius: 10px;
  padding: 1.2rem;
}
.card h3 {
  color: var(--main);
  margin-bottom: 0.8rem;
  font-size: 1.1rem;
}
.sentence-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 50vh;
  overflow-y: auto;
}
.sentence-item {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  background: var(--bg);
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  font-size: 0.9rem;
}
.sentence-item .text { flex: 1; color: var(--text); word-break: break-word; }
.sentence-item button {
  background: none;
  border: none;
  color: var(--sub);
  cursor: pointer;
  font-size: 1rem;
  padding: 0 0.3rem;
}
.sentence-item button:hover { color: var(--error); }

.stats-line {
  color: var(--sub);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

@media (max-width: 640px) {
  .topbar { padding: 1rem; }
  main.test-page { padding: 1rem; }
  .live-stats { gap: 1.2rem; }
  .stat-val { font-size: 1.5rem; }
  .words { font-size: 1.2rem; }
  .results-grid { grid-template-columns: repeat(2, 1fr); }
}