/**
 * EcrioX Typing Arena - Core Stylesheet
 * High-performance typing interface, responsive word display, blinking caret,
 * live HUD metrics, race track, games, and certificate styles.
 */

:root {
  --typing-font-mono: "Fira Code", Consolas, Monaco, "Courier New", monospace;
  --typing-char-correct: #059669;
  --typing-char-incorrect: #dc2626;
  --typing-char-pending: #475569; /* WCAG AA 6.5:1 contrast against light background */
  --typing-caret-color: #2563eb;
  --typing-hud-bg: var(--bg-surface);
  --typing-card-border: var(--border-color);
}

[data-theme="dark"] {
  --typing-char-pending: #94a3b8; /* WCAG AA 6.0:1 contrast against #111827 dark background */
  --typing-char-correct: #34d399;
  --typing-char-incorrect: #f87171;
  --typing-caret-color: #60a5fa;
}

/* ==========================================================================
   1. HERO & ARENA WRAPPER
   ========================================================================== */
.arena-hero {
  text-align: center;
  padding: 3.5rem 1rem 2rem;
  background: radial-gradient(circle at 50% 10%, rgba(37, 99, 235, 0.08) 0%, transparent 60%);
}
.arena-hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary-border);
  color: var(--color-primary);
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}
.arena-hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-main);
  margin-bottom: 1rem;
}
.arena-hero-title .highlight {
  color: var(--color-primary);
}
.arena-hero-desc {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

/* Quick Navigation Links Bar */
.arena-nav-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}
.arena-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}
.arena-nav-link:hover, .arena-nav-link.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

/* ==========================================================================
   2. TYPING TEST WORKSPACE
   ========================================================================== */
.typing-workspace-card {
  max-width: 980px;
  margin: 0 auto 3rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

/* Top Mode & Duration Toolbar */
.typing-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.25rem;
  margin-bottom: 1.75rem;
}
.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}
.tool-pill-btn {
  background: var(--bg-subtle);
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.tool-pill-btn:hover {
  background: var(--bg-subtle-hover);
  color: var(--text-main);
}
.tool-pill-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
}

/* HUD Live Bar */
.typing-hud-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem 1.5rem;
  margin-bottom: 1.75rem;
  align-items: center;
}
.hud-stat-item {
  text-align: center;
}
.hud-stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-main);
  line-height: 1;
  display: block;
  margin-bottom: 0.25rem;
}
.hud-stat-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  font-weight: 700;
}
.hud-timer-val {
  color: var(--color-primary);
}

/* Passage Display Box */
.typing-passage-box {
  min-height: 160px;
  max-height: 220px;
  overflow-y: hidden;
  position: relative;
  font-family: var(--typing-font-mono);
  font-size: 1.35rem;
  line-height: 1.8;
  color: var(--typing-char-pending);
  padding: 0.75rem 0.5rem;
  user-select: none;
  cursor: text;
  transition: filter 0.2s ease;
}

.typing-passage-box:focus-within {
  outline: none;
}

/* Hidden Key Input */
.typing-hidden-input {
  position: absolute;
  opacity: 0;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: default;
  z-index: 10;
}

/* Words & Characters */
.type-word {
  display: inline-block;
  margin-right: 0.25rem;
  border-radius: 4px;
  padding: 1px 3px;
  transition: background 0.15s ease;
}
.type-word.active {
  background: rgba(37, 99, 235, 0.12);
  border-radius: 4px;
}
.type-char {
  position: relative;
  display: inline-block;
  transition: color 0.08s ease, background-color 0.08s ease;
}
.type-char.pending {
  color: var(--typing-char-pending);
}
.type-char.correct {
  color: var(--typing-char-correct);
  font-weight: 500;
}
.type-char.incorrect {
  color: var(--typing-char-incorrect);
  background: rgba(239, 68, 68, 0.2);
  border-radius: 2px;
  text-decoration: underline wavy var(--typing-char-incorrect);
}
.type-char.caret {
  color: var(--text-main) !important;
  font-weight: 700;
  background: var(--color-primary-light);
  border-radius: 2px;
  outline: 1px solid var(--color-primary-border);
}

/* Caret Cursor Indicator */
.type-char.caret::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 10%;
  width: 2.5px;
  height: 80%;
  background: var(--typing-caret-color);
  animation: caretPulse 0.9s infinite alternate ease-in-out;
  border-radius: 1px;
  z-index: 5;
}
@keyframes caretPulse {
  0% { opacity: 1; }
  100% { opacity: 0.15; }
}

/* Blur overlay when unfocused */
.passage-focus-warning {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.15rem;
  border-radius: var(--radius-lg);
  cursor: pointer;
  z-index: 20;
  display: none;
}
.passage-focus-warning.show {
  display: flex;
}

/* Bottom Controls */
.typing-footer-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

/* ==========================================================================
   3. RESULT MODAL / OVERLAY
   ========================================================================== */
.typing-result-card {
  display: none;
  background: var(--bg-surface);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  box-shadow: 0 15px 45px rgba(37, 99, 235, 0.15);
  text-align: center;
  margin-top: 2rem;
  animation: fadeInResult 0.3s ease-out;
}
.typing-result-card.show {
  display: block;
}
@keyframes fadeInResult {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-main-wpm {
  font-size: 4.5rem;
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.result-rank-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.result-breakdown-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1rem;
  max-width: 680px;
  margin: 0 auto 2.5rem;
}
.result-stat-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
}
.result-stat-box .val {
  font-size: 1.6rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-main);
  display: block;
}
.result-stat-box .lbl {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
}

.result-actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

/* ==========================================================================
   4. RACE TRACK STYLES
   ========================================================================== */
.race-arena-container {
  max-width: 980px;
  margin: 0 auto 3rem;
}
.race-track-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  margin-bottom: 2rem;
}
.race-lane {
  position: relative;
  background: var(--bg-subtle);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-full);
  height: 52px;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  padding: 0 1rem;
}
.race-lane:last-child {
  margin-bottom: 0;
}
.race-car {
  position: absolute;
  left: 10px;
  font-size: 1.8rem;
  transition: left 0.25s linear;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.race-driver-name {
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  color: var(--text-main);
  white-space: nowrap;
}
.race-finish-line {
  position: absolute;
  right: 15px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: repeating-linear-gradient(0deg, #ffffff, #ffffff 8px, #000000 8px, #000000 16px);
  border-radius: 2px;
}

/* ==========================================================================
   5. GAMES GRID & CANVAS
   ========================================================================== */
.games-catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1080px;
  margin: 2rem auto;
}
.game-feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.game-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.game-stage-container {
  max-width: 820px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-xl);
}
.word-rain-canvas {
  width: 100%;
  height: 380px;
  background: #0f172a;
  border-radius: var(--radius-lg);
  display: block;
}

/* ==========================================================================
   6. WEAK KEY HEATMAP & PRACTICE
   ========================================================================== */
.keyboard-heatmap-wrapper {
  max-width: 860px;
  margin: 2rem auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}
.keyboard-rows-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}
.keyboard-row {
  display: flex;
  gap: 0.4rem;
}
.key-cap {
  width: 48px;
  height: 48px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
  transition: all 0.2s ease;
  position: relative;
}
.key-cap.heat-low {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #059669;
}
.key-cap.heat-med {
  background: rgba(245, 158, 11, 0.2);
  border-color: rgba(245, 158, 11, 0.5);
  color: #d97706;
}
.key-cap.heat-high {
  background: rgba(239, 68, 68, 0.25);
  border-color: rgba(239, 68, 68, 0.6);
  color: #dc2626;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.3);
}
.key-mistake-count {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* ==========================================================================
   7. CERTIFICATE GENERATOR CANVAS
   ========================================================================== */
.cert-designer-container {
  max-width: 960px;
  margin: 2rem auto;
  text-align: center;
}
.certificate-canvas-wrapper {
  background: #ffffff;
  border: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  max-width: 800px;
  margin: 0 auto 1.5rem;
}
#certificateCanvas {
  width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   8. PROGRESS DASHBOARD & CHART
   ========================================================================== */
.dashboard-container {
  max-width: 1040px;
  margin: 2rem auto;
}
.chart-box-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
}
.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.history-table th, .history-table td {
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}
.history-table th {
  background: var(--bg-subtle);
  font-weight: 700;
  color: var(--text-main);
}