/* TypeHero Design System */
:root {
  --bg-main: #18191c;
  --bg-card: #212328;
  --bg-sub: #121316;
  --text-main: #d1d0c5;
  --text-sub: #646669;
  --text-dim: #43464a;
  --accent: #e2b714;
  --accent-rgb: 226, 183, 20;
  --accent-hover: #f5cf2a;
  --error: #ca4754;
  --error-extra: #7e2a33;
  --success: #4ade80;
  --border: #2c2e34;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius: 12px;
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --caret-color: var(--accent);
}

/* Theme: Cyberpunk */
[data-theme="cyberpunk"] {
  --bg-main: #0d0f18;
  --bg-card: #151928;
  --bg-sub: #07090e;
  --text-main: #f0f6fc;
  --text-sub: #798399;
  --text-dim: #474f63;
  --accent: #00f0ff;
  --accent-rgb: 0, 240, 255;
  --accent-hover: #5df7ff;
  --error: #ff0055;
  --border: #242b45;
  --caret-color: #ff0055;
}

/* Theme: Dracula */
[data-theme="dracula"] {
  --bg-main: #282a36;
  --bg-card: #343746;
  --bg-sub: #1e1f29;
  --text-main: #f8f8f2;
  --text-sub: #6272a4;
  --text-dim: #44475a;
  --accent: #bd93f9;
  --accent-rgb: 189, 147, 249;
  --accent-hover: #d1b3ff;
  --error: #ff5555;
  --border: #44475a;
  --caret-color: #ff79c6;
}

/* Theme: Nord */
[data-theme="nord"] {
  --bg-main: #2e3440;
  --bg-card: #3b4252;
  --bg-sub: #242933;
  --text-main: #eceff4;
  --text-sub: #88c0d0;
  --text-dim: #4c566a;
  --accent: #88c0d0;
  --accent-rgb: 136, 192, 208;
  --accent-hover: #8fbcbb;
  --error: #bf616a;
  --border: #434c5e;
  --caret-color: #88c0d0;
}

/* Theme: Matrix */
[data-theme="matrix"] {
  --bg-main: #060a07;
  --bg-card: #0c140e;
  --bg-sub: #020402;
  --text-main: #15ff6d;
  --text-sub: #008f39;
  --text-dim: #004d1f;
  --accent: #15ff6d;
  --accent-rgb: 21, 255, 109;
  --accent-hover: #52ff94;
  --error: #ff3344;
  --border: #0e2916;
  --caret-color: #15ff6d;
}

/* Theme: Retro 80s */
[data-theme="retro"] {
  --bg-main: #18111e;
  --bg-card: #251b30;
  --bg-sub: #100b14;
  --text-main: #ffe3a0;
  --text-sub: #9e7fa6;
  --text-dim: #5c4363;
  --accent: #ff6b8b;
  --accent-rgb: 255, 107, 139;
  --accent-hover: #ff8fa7;
  --error: #ff4757;
  --border: #442a59;
  --caret-color: #ffa502;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-sub);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.5px;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), var(--error));
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-sub);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  text-decoration: none;
}

.nav-btn:hover, .nav-btn.active {
  color: var(--text-main);
  background: var(--bg-card);
  border-color: var(--border);
}

.nav-btn.btn-pro {
  background: linear-gradient(135deg, #eab308, #ca8a04);
  color: #000;
  font-weight: 700;
  border: none;
  box-shadow: 0 4px 12px rgba(234, 179, 8, 0.25);
}

.nav-btn.btn-pro:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(234, 179, 8, 0.35);
}

.badge-pro {
  background: #eab308;
  color: #000;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  margin-left: 4px;
}

/* Sub-header / Quick Bar */
.quick-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 12px 0;
  margin-top: 14px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 0.88rem;
  flex-wrap: wrap;
}

.quick-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.quick-divider {
  width: 1px;
  height: 18px;
  background: var(--border);
}

.opt-btn {
  background: none;
  border: none;
  color: var(--text-sub);
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.85rem;
  transition: all 0.15s ease;
}

.opt-btn:hover {
  color: var(--text-main);
}

.opt-btn.active {
  color: var(--accent);
  background: rgba(var(--accent-rgb), 0.12);
}

/* Sound Switch Bar */
.audio-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--text-sub);
}

.audio-select {
  background: var(--bg-sub);
  color: var(--text-main);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
  outline: none;
}

/* Main Area */
main {
  flex: 1;
  padding: 24px 0 40px;
}

.view-section {
  display: none;
}

.view-section.active {
  display: block;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Live Stats Header */
.live-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding: 10px 16px;
  background: var(--bg-sub);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.live-stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

.stat-val {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--accent);
}

/* Typing Box */
.typing-wrapper {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow);
  min-height: 180px;
  cursor: text;
  user-select: none;
}

.typing-wrapper.focused {
  border-color: rgba(var(--accent-rgb), 0.5);
  box-shadow: 0 0 0 2px rgba(var(--accent-rgb), 0.15), var(--shadow);
}

.hidden-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  left: -9999px;
}

.words-container {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  line-height: 2.1rem;
  letter-spacing: 0.5px;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 0.65em;
  max-height: 170px;
  overflow: hidden;
  position: relative;
}

.word {
  display: inline-flex;
  position: relative;
  border-bottom: 2px solid transparent;
}

.word.error-word {
  border-bottom-color: var(--error);
}

.letter {
  color: var(--text-sub);
  position: relative;
  transition: color 0.05s ease;
}

.letter.correct {
  color: var(--text-main);
}

.letter.incorrect {
  color: var(--error);
  text-decoration: underline;
}

.letter.extra {
  color: var(--error-extra);
}

/* Caret */
.caret {
  position: absolute;
  width: 2.5px;
  height: 1.5rem;
  background: var(--caret-color);
  border-radius: 2px;
  pointer-events: none;
  transition: left 0.07s cubic-bezier(0.1, 0.9, 0.2, 1), top 0.07s cubic-bezier(0.1, 0.9, 0.2, 1);
  animation: caretBlink 1s infinite;
  box-shadow: 0 0 8px var(--caret-color);
}

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

.typing-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
}

.action-btn {
  background: var(--bg-sub);
  color: var(--text-sub);
  border: 1px solid var(--border);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.action-btn:hover {
  color: var(--text-main);
  border-color: var(--accent);
  background: rgba(var(--accent-rgb), 0.08);
}

/* Results Card */
.results-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  margin-top: 20px;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.result-stat {
  background: var(--bg-sub);
  padding: 18px;
  border-radius: 10px;
  border: 1px solid var(--border);
  text-align: center;
}

.result-val {
  font-size: 2.4rem;
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--accent);
}

.result-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-sub);
  font-weight: 700;
  letter-spacing: 1px;
  margin-top: 4px;
}

/* Weakness Heatmap & Analyzer */
.weakness-box {
  background: var(--bg-sub);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-top: 20px;
}

.weakness-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.weak-key-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.key-tag {
  background: rgba(202, 71, 84, 0.15);
  color: var(--error);
  border: 1px solid rgba(202, 71, 84, 0.3);
  padding: 4px 10px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-weight: 700;
}

/* Multiplayer Arena */
.arena-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.arena-controls {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.race-track-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.race-lane {
  background: var(--bg-sub);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 600;
}

.racer-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lane-track {
  height: 12px;
  background: var(--bg-main);
  border-radius: 6px;
  position: relative;
  overflow: visible;
}

.lane-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--error));
  border-radius: 6px;
  width: 0%;
  transition: width 0.15s linear;
}

.lane-car {
  position: absolute;
  top: -12px;
  font-size: 1.4rem;
  transform: translateX(-50%);
  transition: left 0.15s linear;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  place-items: center;
  z-index: 100;
  padding: 20px;
}

.modal-backdrop.open {
  display: grid;
  animation: fadeIn 0.15s ease-out;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 520px;
  padding: 30px;
  box-shadow: var(--shadow);
  position: relative;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: none;
  border: none;
  color: var(--text-sub);
  font-size: 1.4rem;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--text-main);
}

.modal-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 0.9rem;
  color: var(--text-sub);
  margin-bottom: 20px;
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-sub);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.form-input {
  width: 100%;
  background: var(--bg-sub);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  font-family: inherit;
  transition: border-color 0.15s ease;
}

.form-input:focus {
  border-color: var(--accent);
}

.btn-submit {
  width: 100%;
  background: var(--accent);
  color: #000;
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-top: 8px;
}

.btn-submit:hover {
  background: var(--accent-hover);
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.price-card {
  background: var(--bg-sub);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.price-card.featured {
  border-color: #eab308;
  background: rgba(234, 179, 8, 0.04);
}

.price-amount {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--text-main);
  margin: 8px 0;
}

.price-features {
  list-style: none;
  font-size: 0.82rem;
  color: var(--text-sub);
  margin: 12px 0 16px;
  text-align: left;
  line-height: 1.6;
}

/* Ad Placement Banner */
.ad-slot {
  margin: 28px 0;
  background: var(--bg-sub);
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ad-slot.hidden {
  display: none !important;
}

.ad-cta {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

/* Leaderboard Table */
.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  font-size: 0.92rem;
}

.leaderboard-table th, .leaderboard-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.leaderboard-table th {
  color: var(--text-sub);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.rank-pill {
  font-weight: 800;
  font-family: var(--font-mono);
  display: inline-block;
  width: 26px;
  text-align: center;
}

.rank-1 { color: #facc15; }
.rank-2 { color: #cbd5e1; }
.rank-3 { color: #b45309; }

/* Footer */
footer {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  background: var(--bg-sub);
  font-size: 0.82rem;
  color: var(--text-sub);
  text-align: center;
}

/* Responsiveness */
@media (max-width: 768px) {
  .words-container { font-size: 1.2rem; line-height: 1.8rem; }
  .pricing-grid { grid-template-columns: 1fr; }
  .quick-bar { gap: 8px; }
  .nav-links { gap: 4px; }
  .nav-btn span { display: none; }
}