/* ══════════════════════════════════════════════
   DevArcade — Stylesheet
   Dark GitHub-inspired dev theme
   ══════════════════════════════════════════════ */

:root {
  --bg0: #0d1117;
  --bg1: #161b22;
  --bg2: #1c2128;
  --bg3: #21262d;
  --border: #30363d;

  --green:  #39d353;
  --cyan:   #79c0ff;
  --yellow: #e3b341;
  --red:    #ff7b72;
  --purple: #d2a8ff;
  --orange: #ffa657;

  --text:   #e6edf3;
  --muted:  #8b949e;
  --dim:    #484f58;

  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --font-ui:   'Inter', -apple-system, sans-serif;

  --radius: 10px;
  --transition: 200ms ease;
}

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

html, body {
  height: 100%;
  background: var(--bg0);
  color: var(--text);
  font-family: var(--font-ui);
  overflow: hidden;
}

/* ─── Matrix Canvas ─── */
#matrix-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ─── App Shell ─── */
#app {
  position: relative;
  z-index: 1;
  height: 100vh;
  overflow: hidden;
}

.screen {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  padding: 0 0 24px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px);
  transition: opacity 300ms ease, transform 300ms ease;
}

.screen.active {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

/* ══ HUB SCREEN ══════════════════════════════ */

/* Header */
.hub-header {
  text-align: center;
  padding: 52px 24px 28px;
}

.logo {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1;
}

.logo-bracket {
  color: var(--green);
  text-shadow: 0 0 20px var(--green);
}

.logo-text {
  color: var(--text);
}

.tagline {
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 10px;
  font-style: italic;
}

/* Stats Bar */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 40px;
  padding: 16px 24px;
  margin: 0 auto 32px;
  max-width: 700px;
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: fit-content;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.stat-icon { font-size: 1.4rem; }

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--green);
}

/* Games Grid */
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Game Card */
.game-card {
  position: relative;
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px 20px;
  cursor: pointer;
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
}

.game-card:hover { transform: translateY(-4px); }

.game-card[data-accent="cyan"]:hover  { border-color: var(--cyan); }
.game-card[data-accent="red"]:hover   { border-color: var(--red); }
.game-card[data-accent="green"]:hover { border-color: var(--green); }

.card-glow {
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.game-card[data-accent="cyan"]:hover  .card-glow { background: radial-gradient(ellipse at 50% 0%, rgba(121,192,255,.12), transparent 70%); opacity: 1; }
.game-card[data-accent="red"]:hover   .card-glow { background: radial-gradient(ellipse at 50% 0%, rgba(255,123,114,.12), transparent 70%); opacity: 1; }
.game-card[data-accent="green"]:hover .card-glow { background: radial-gradient(ellipse at 50% 0%, rgba(57,211,83,.12),  transparent 70%); opacity: 1; }

.card-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
  display: block;
}

.card-title {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 14px;
}

.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 20px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--muted);
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-best {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.card-best strong { color: var(--text); }

.card-cta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--dim);
  transition: color var(--transition);
}

.game-card:hover .card-cta { color: var(--text); }

/* Hub Footer */
.hub-footer {
  display: flex;
  justify-content: space-between;
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--dim);
  max-width: 1000px;
  margin: 0 auto;
}

/* ══ GAME HEADER (shared) ══════════════════════ */

.game-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: var(--bg1);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.back-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.back-btn:hover { color: var(--text); border-color: var(--text); }

.game-header-title {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  flex: 1;
}

.hud-stats {
  display: flex;
  gap: 20px;
}

.hud-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 48px;
}

.hud-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hud-val {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--green);
}

.hud-timer .hud-val { color: var(--yellow); }

/* ══ BUTTONS ══════════════════════════════════ */

.btn-primary {
  display: inline-block;
  background: var(--green);
  color: #000;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 12px 28px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}

.btn-primary:hover { opacity: 0.88; transform: scale(1.02); }
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 12px 28px;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color var(--transition);
}

.btn-secondary:hover { border-color: var(--text); }

/* ══ TYPER GAME ════════════════════════════════ */

#typer-wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px;
}

/* Setup state */
.typer-setup {
  text-align: center;
  padding: 40px 0;
}

.typer-setup h2 {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--cyan);
}

.typer-setup p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 32px;
}

.typer-options {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.option-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.option-group select {
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  outline: none;
}

.option-group select:focus { border-color: var(--cyan); }

/* Timer bar */
.timer-bar {
  height: 4px;
  background: var(--bg3);
  border-radius: 2px;
  margin-bottom: 20px;
  overflow: hidden;
}

.timer-fill {
  height: 100%;
  background: var(--yellow);
  border-radius: 2px;
  transition: width 1s linear, background 0.5s;
}

/* Code display */
.code-display {
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
  white-space: pre;
  overflow-x: auto;
  position: relative;
  min-height: 180px;
}

.code-lang-badge {
  position: absolute;
  top: 10px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.char-pending  { color: var(--muted); }
.char-correct  { color: var(--green); }
.char-wrong    { color: var(--red); background: rgba(255,123,114,.15); border-radius: 2px; }
.char-cursor   { color: var(--text); background: var(--cyan); border-radius: 2px; animation: blink 1s step-end infinite; }

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

/* Hidden input for capturing keystrokes */
.typer-input-capture {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

/* Result screen */
.typer-result {
  text-align: center;
  padding: 40px 0;
  animation: fadeIn 400ms ease;
}

.result-title {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.result-title.success { color: var(--green); }
.result-title.timeout { color: var(--yellow); }

.result-stats {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin: 32px 0;
  flex-wrap: wrap;
}

.result-stat {
  text-align: center;
}

.result-stat-val {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--cyan);
  display: block;
}

.result-stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.result-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 16px;
}

/* ══ BUG BASH GAME ═════════════════════════════ */

#bugbash-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
}

.bugbash-setup {
  text-align: center;
  padding: 40px 0;
}

.bugbash-setup h2 {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: var(--red);
}

.bugbash-setup p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.bug-stages-legend {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.legend-item {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Bug Grid */
.bug-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.bug-cell {
  aspect-ratio: 1;
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 100ms, border-color 200ms;
  user-select: none;
  -webkit-user-select: none;
}

.bug-cell:hover { transform: scale(1.04); }
.bug-cell:active { transform: scale(0.95); }

.bug-cell-icon { font-size: 1.8rem; line-height: 1; }
.bug-cell-label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

/* Stage styles */
.bug-cell.stage-0 { border-color: var(--border); }
.bug-cell.stage-0 .bug-cell-icon { opacity: 0.1; font-size: 1rem; }

.bug-cell.stage-1 { border-color: rgba(57,211,83,.3); }
.bug-cell.stage-1 .bug-cell-label { color: var(--green); }
.bug-cell.stage-1 { animation: pulse-green 2s ease-in-out infinite; }

.bug-cell.stage-2 { border-color: rgba(227,179,65,.5); }
.bug-cell.stage-2 .bug-cell-label { color: var(--yellow); }
.bug-cell.stage-2 { animation: pulse-yellow 1.5s ease-in-out infinite; }

.bug-cell.stage-3 {
  border-color: var(--orange);
  background: rgba(255,166,87,.08);
}
.bug-cell.stage-3 .bug-cell-label { color: var(--orange); }
.bug-cell.stage-3 { animation: pulse-orange 1s ease-in-out infinite; }

.bug-cell.stage-4 {
  border-color: var(--red);
  background: rgba(255,123,114,.12);
}
.bug-cell.stage-4 .bug-cell-label { color: var(--red); }
.bug-cell.stage-4 { animation: shake 0.6s ease-in-out infinite; }

.bug-cell.stage-5 {
  border-color: #ff0;
  background: rgba(255,255,0,.08);
  animation: critical-flash 0.4s ease-in-out infinite;
}
.bug-cell.stage-5 .bug-cell-label { color: #ff0; }

.bug-cell.squashed .bug-cell-icon { animation: squash-pop 400ms ease forwards; }

@keyframes pulse-green  { 0%,100%{box-shadow:0 0 0  rgba(57,211,83,0)}  50%{box-shadow:0 0 10px rgba(57,211,83,.35)} }
@keyframes pulse-yellow { 0%,100%{box-shadow:0 0 0  rgba(227,179,65,0)} 50%{box-shadow:0 0 12px rgba(227,179,65,.4)} }
@keyframes pulse-orange { 0%,100%{box-shadow:0 0 0  rgba(255,166,87,0)} 50%{box-shadow:0 0 14px rgba(255,166,87,.45)} }
@keyframes shake {
  0%,100%{transform:translateX(0)}
  20%,60%{transform:translateX(-3px)}
  40%,80%{transform:translateX(3px)}
}
@keyframes critical-flash { 0%,100%{opacity:1} 50%{opacity:.65} }
@keyframes squash-pop {
  0%  { transform: scale(1); opacity: 1; }
  40% { transform: scale(1.4); }
  100%{ transform: scale(0); opacity: 0; }
}

/* Popup score floaters */
.score-pop {
  position: fixed;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  pointer-events: none;
  animation: score-float 900ms ease forwards;
  z-index: 100;
}
@keyframes score-float {
  0%   { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(-60px); opacity: 0; }
}

/* Result */
.bugbash-result {
  text-align: center;
  padding: 40px 0;
  animation: fadeIn 400ms ease;
}

/* ══ DEV RUNNER ════════════════════════════════ */

#runner-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px;
}

#runner-canvas {
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  max-width: 100%;
}

#runner-overlay {
  position: absolute;
  inset: 24px;
  border-radius: var(--radius);
  background: rgba(13,17,23,.88);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  transition: opacity 300ms ease;
}

#runner-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.overlay-inner { text-align: center; }

.overlay-inner h2 {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--green);
  text-shadow: 0 0 20px var(--green);
  margin-bottom: 8px;
}

.overlay-inner p {
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.controls-hint {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-bottom: 28px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted);
  flex-wrap: wrap;
}

kbd {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text);
}

/* ══ SHARED UTILITIES ══════════════════════════ */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg0); }
::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 3px; }

/* ══ RESPONSIVE ════════════════════════════════ */

@media (max-width: 600px) {
  .hub-header { padding: 32px 16px 20px; }
  .stats-bar { gap: 20px; padding: 12px 16px; }
  .games-grid { padding: 0 16px; gap: 14px; }
  .hud-stats { gap: 10px; }
  .typer-options { flex-direction: column; align-items: center; }
  .bug-grid { grid-template-columns: repeat(4, 1fr); gap: 7px; }
  .bug-cell-icon { font-size: 1.4rem; }
}