/* === QuickTools — Global Styles v2 === */
@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@400;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  color-scheme: dark;

  /* Backgrounds */
  --bg:          #080f24;
  --panel:       #0f1a35;
  --panel-alt:   #131f3e;
  --overlay:     rgba(8, 15, 36, 0.88);

  /* Borders */
  --border:      #1e3060;
  --border-hi:   rgba(34, 211, 238, 0.35);

  /* Brand accent — Neon Cyan */
  --accent:        #22d3ee;
  --accent-strong: #06b6d4;
  --accent-glow:   rgba(34, 211, 238, 0.18);

  /* Action / CTA */
  --cta:           #f43f5e;
  --cta-hover:     #e11d48;
  --cta-glow:      rgba(244, 63, 94, 0.28);

  /* Secondary accent */
  --indigo:        #818cf8;

  /* Typography */
  --text:   #e2e8f0;
  --muted:  #64748b;
  --dim:    #334155;

  /* Semantic */
  --ok:      #22c55e;
  --warn:    #f59e0b;
  --danger:  #f43f5e;

  /* Game states */
  --game-idle:   #0f1a35;
  --game-wait:   #3b0a0a;
  --game-ready:  #0a2e14;
  --game-early:  #2d1a00;
  --game-result: #0f1a35;

  /* Radii */
  --r-sm:   8px;
  --r-md:   12px;
  --r-lg:   18px;
  --r-xl:   24px;
  --r-pill: 999px;

  /* Shadows */
  --shadow-sm:     0 1px 4px rgba(0,0,0,0.5);
  --shadow-md:     0 4px 20px rgba(0,0,0,0.55);
  --shadow-accent: 0 0 18px var(--accent-glow);
  --shadow-cta:    0 0 20px var(--cta-glow);

  /* Transitions */
  --ease:   cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 150ms;
  --t-base: 220ms;

  /* Fonts */
  --font-ui:      'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Chakra Petch', 'Inter', monospace;

  /* Z-index */
  --z-raised:  10;
  --z-sticky:  50;
  --z-modal:   100;
}

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

body {
  font-family: var(--font-ui);
  background:
    radial-gradient(ellipse 80% 40% at 50% -5%, rgba(34, 211, 238, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 30% at 90% 110%, rgba(129, 140, 248, 0.06) 0%, transparent 60%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

button, select, input, textarea { font: inherit; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); text-decoration: underline; }

h1, h2 { font-family: var(--font-display); }

/* === Header === */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.5rem;
  border-bottom: 1px solid rgba(30, 48, 96, 0.7);
  background: var(--overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: color var(--t-fast);
}
.logo:hover { color: var(--accent); text-decoration: none; }

.header-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-nav a {
  color: var(--muted);
  font-size: 0.9rem;
  transition: color var(--t-fast);
}
.header-nav a:hover { color: var(--text); text-decoration: none; }

.lang-select {
  padding: 0.4rem 0.65rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: var(--panel-alt);
  color: var(--text);
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color var(--t-fast);
}
.lang-select:hover { border-color: var(--accent); }
.lang-select:focus { outline: 2px solid var(--accent); outline-offset: 2px; }

/* === Home Page === */
.home-page {
  width: min(960px, calc(100vw - 2rem));
  margin: 0 auto;
  padding: 3.5rem 0 5rem;
  flex: 1;
}

.home-hero {
  text-align: center;
  margin-bottom: 3rem;
}

.home-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.home-hero p {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 46ch;
  margin: 0 auto;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.tool-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.5rem;
  text-decoration: none;
  transition:
    border-color var(--t-base) var(--ease),
    transform var(--t-fast) var(--ease),
    box-shadow var(--t-base) var(--ease);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--r-lg);
  opacity: 0;
  background: radial-gradient(circle at 30% 20%, var(--accent-glow) 0%, transparent 70%);
  transition: opacity var(--t-base);
}

.tool-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md), var(--shadow-accent);
  text-decoration: none;
}

.tool-card:hover::before { opacity: 1; }

.tool-card.coming-soon {
  opacity: 0.35;
  pointer-events: none;
}

.tool-icon {
  font-size: 2.25rem;
  display: block;
  margin-bottom: 1rem;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.tool-card h2 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text);
  letter-spacing: 0.01em;
}

.tool-card p {
  color: var(--muted);
  font-size: 0.87rem;
  line-height: 1.55;
}

/* === Tool Page Layout === */
.tool-page {
  width: min(740px, calc(100vw - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 5rem;
  flex: 1;
}

.tool-page h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.tool-desc {
  color: var(--muted);
  margin-bottom: 1.75rem;
  line-height: 1.6;
  font-size: 0.95rem;
}

/* === Round Info === */
.round-info {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  min-height: 1.5em;
}

/* === Game Area === */
.game-area {
  position: relative;
  width: 100%;
  min-height: 320px;
  border-radius: var(--r-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  transition: background var(--t-base) var(--ease), border-color var(--t-base);
  margin-bottom: 1.5rem;
  -webkit-tap-highlight-color: transparent;
}

.game-area:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.game-area.idle {
  background: var(--game-idle);
  border: 2px solid var(--border);
}

.game-area.waiting {
  background: var(--game-wait);
  border: 2px solid #7f1d1d;
}

.game-area.ready {
  background: var(--game-ready);
  border: 2px solid #14532d;
}

.game-area.too-early {
  background: var(--game-early);
  border: 2px solid #78350f;
}

.game-area.result {
  background: var(--game-result);
  border: 2px solid var(--border-hi);
}

.game-area.hidden { display: none; }

/* === Spacebar Key Visual === */
.spacebar-key {
  display: flex;
  align-items: center;
  justify-content: center;
  width: clamp(180px, 50%, 320px);
  height: 56px;
  background: var(--panel-alt);
  border: 2px solid var(--border-hi);
  border-bottom-width: 5px;
  border-radius: var(--r-md);
  margin: 0.5rem 0;
  transition: transform 80ms var(--ease), border-color 80ms, background 80ms;
  cursor: pointer;
}

.spacebar-key.pressed {
  transform: translateY(3px);
  border-bottom-width: 2px;
  background: rgba(34, 211, 238, 0.12);
  border-color: var(--accent);
}

.spacebar-key-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.spacebar-key.pressed .spacebar-key-label {
  color: var(--accent);
}

.press-count {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-glow);
  letter-spacing: -0.02em;
  line-height: 1;
}

.game-msg {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.01em;
}

.game-time {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-glow);
  letter-spacing: -0.02em;
  line-height: 1;
}

/* === Results === */
.results-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.75rem;
  margin-bottom: 2rem;
  animation: fadeUp 280ms var(--ease);
}

.results-card.hidden { display: none; }

.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.875rem;
  margin-bottom: 1.5rem;
}

.result-item {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1rem 0.75rem;
  text-align: center;
  transition: border-color var(--t-fast);
}

.result-item.accent {
  border-color: var(--border-hi);
  background: rgba(34, 211, 238, 0.07);
}

.result-label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.result-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.result-item.accent .result-value {
  color: var(--accent);
  text-shadow: 0 0 16px var(--accent-glow);
}

.result-sub {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 0.3rem;
}

/* === Histogram === */
.histogram {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 72px;
  margin-bottom: 1.5rem;
  padding: 0 0.25rem;
}

.histo-bar {
  flex: 1;
  background: rgba(34, 211, 238, 0.18);
  border-radius: 3px 3px 0 0;
  min-width: 4px;
  transition: background var(--t-fast);
}

.histo-bar.highlight {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* === Buttons === */
.results-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

.btn-primary {
  padding: 0.8rem 1.75rem;
  border-radius: var(--r-pill);
  border: none;
  background: var(--cta);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  min-height: 44px;
  transition:
    background var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}

.btn-primary:hover {
  background: var(--cta-hover);
  box-shadow: var(--shadow-cta);
  transform: translateY(-1px);
}

.btn-primary:active { transform: translateY(0); }

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn-ghost {
  padding: 0.8rem 1.75rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  min-height: 44px;
  transition:
    border-color var(--t-fast),
    color var(--t-fast),
    background var(--t-fast);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* === FAQ === */
.faq {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.faq h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

details {
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  margin-bottom: 0.625rem;
  overflow: hidden;
  transition: border-color var(--t-fast);
}

details:hover { border-color: rgba(34, 211, 238, 0.25); }

summary {
  padding: 0.9rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.92rem;
  background: var(--panel-alt);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  transition: color var(--t-fast);
}

summary::-webkit-details-marker { display: none; }

summary::before {
  content: '▸';
  color: var(--accent);
  font-size: 0.75rem;
  transition: transform var(--t-fast);
  flex-shrink: 0;
}

details[open] summary::before { transform: rotate(90deg); }

details p {
  padding: 0.75rem 1.25rem 1rem;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}

/* === Ad Slots === */
.ad-slot {
  margin: 1.5rem 0;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-placeholder {
  width: 100%;
  max-width: 728px;
  min-height: 90px;
  border: 1px dashed var(--border);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dim);
  font-size: 0.78rem;
}

/* === Footer === */
.site-footer {
  text-align: center;
  padding: 1.25rem 1.5rem;
  color: var(--dim);
  font-size: 0.82rem;
  border-top: 1px solid var(--border);
}

/* === Animations === */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scorePop {
  0%   { transform: scale(0.8); opacity: 0; }
  65%  { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* === Responsive === */
@media (max-width: 600px) {
  .site-header { padding: 0.75rem 1rem; }
  .game-area { min-height: 250px; }
  .results-grid { grid-template-columns: 1fr 1fr; }
  .results-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .tool-grid { grid-template-columns: 1fr 1fr; }
  .grid-container { width: 90vw; height: 90vw; max-width: 400px; max-height: 400px; }
  .aim-arena { height: 300px; }
  .home-page { padding: 2rem 0 4rem; }
}

@media (max-width: 400px) {
  .tool-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr; }
}

/* === Duration Bar (CPS) === */
.duration-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
}

.duration-bar.hidden { display: none; }

.duration-btns {
  display: flex;
  gap: 0.4rem;
}

.dur-btn {
  padding: 0.4rem 0.85rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: var(--panel-alt);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  min-height: 34px;
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast), box-shadow var(--t-fast);
}

.dur-btn.active {
  background: var(--accent);
  color: #080f24;
  border-color: var(--accent);
  font-weight: 700;
  box-shadow: 0 0 10px var(--accent-glow);
}

.dur-btn:hover:not(.active) {
  border-color: var(--accent);
  color: var(--accent);
}

/* === Results grid 4-col === */
.results-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* === Memory Grid === */
.grid-container {
  display: grid;
  gap: 6px;
  width: 360px;
  height: 360px;
  max-width: 100%;
  margin: 0 auto 1.5rem;
  aspect-ratio: 1;
}

.grid-container.hidden { display: none; }

.mem-tile {
  background: var(--panel-alt);
  border: 2px solid var(--border);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}

.mem-tile:hover { border-color: var(--border-hi); }
.mem-tile.active {
  background: var(--accent);
  border-color: var(--accent-strong);
  box-shadow: 0 0 14px var(--accent-glow);
}
.mem-tile.correct {
  background: var(--ok);
  border-color: var(--ok);
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.3);
}
.mem-tile.wrong {
  background: var(--danger);
  border-color: var(--danger);
  box-shadow: 0 0 10px var(--cta-glow);
}

/* === Aim Arena === */
.aim-arena {
  position: relative;
  width: 100%;
  height: 400px;
  background: var(--panel-alt);
  border: 2px solid var(--border);
  border-radius: var(--r-xl);
  margin-bottom: 1.5rem;
  overflow: hidden;
  cursor: crosshair;
  transition: border-color var(--t-base);
}

.aim-arena:hover { border-color: rgba(34, 211, 238, 0.2); }
.aim-arena.hidden { display: none; }

.aim-target {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, #ff6b7a 0%, var(--danger) 55%, transparent 70%);
  box-shadow: 0 0 14px var(--cta-glow);
  cursor: pointer;
  transition: transform 0.05s;
}

.aim-target::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 28%;
  height: 28%;
  transform: translate(-50%, -50%);
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
}

.aim-target:hover { transform: scale(1.08); }

/* === Keyboard Test === */
.keyboard-layout {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
  max-width: 800px;
  margin: 0 auto 1.5rem;
  user-select: none;
}
.keyboard-row {
  display: flex;
  gap: 4px;
  justify-content: center;
}
.key {
  min-width: 48px;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  transition: background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast), color var(--t-fast);
}
.key.active {
  background: var(--accent);
  border-color: var(--accent-strong);
  color: #08102a;
  box-shadow: 0 0 12px var(--accent-glow);
}
.key.pressed {
  background: var(--accent-strong);
  border-color: var(--accent);
  color: #08102a;
}

/* === Typing Speed Test === */
.typing-passage {
  font-family: var(--font-ui);
  font-size: 1.2rem;
  line-height: 2;
  background: var(--panel-alt);
  padding: var(--sp-lg);
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  margin-bottom: var(--sp-lg);
  white-space: pre-wrap;
  word-break: break-word;
}
.char-correct { color: var(--ok); }
.char-wrong { color: var(--danger); text-decoration: underline; }
.char-current { border-bottom: 2px solid var(--accent); }
.char-pending { color: var(--muted); }
.typing-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.typing-stats {
  display: flex;
  gap: var(--sp-lg);
  justify-content: center;
  margin-bottom: var(--sp-md);
  font-family: var(--font-display);
}
.typing-stats .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}
.typing-stats .stat-label {
  font-size: 0.75rem;
  color: var(--muted);
}

/* === Monitor Refresh Rate Test === */
.ufo-track {
  height: 60px;
  background: var(--panel-alt);
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  overflow: hidden;
  position: relative;
  margin-bottom: var(--sp-lg);
}
.ufo-object {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* === Mouse DPI Analyzer === */
.dpi-ruler {
  height: 60px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  position: relative;
  margin-bottom: var(--sp-md);
  overflow: hidden;
}
.dpi-ruler .tick {
  position: absolute;
  top: 0;
  width: 1px;
  background: var(--border);
}
.dpi-ruler .tick-label {
  position: absolute;
  bottom: 4px;
  font-size: 0.65rem;
  color: var(--muted);
  transform: translateX(-50%);
}
.dpi-track-area {
  min-height: 200px;
  background: var(--panel-alt);
  border: 2px dashed var(--border);
  border-radius: var(--r-xl);
  cursor: crosshair;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-lg);
  transition: border-color var(--t-fast);
}
.dpi-track-area.tracking {
  border-color: var(--accent);
  border-style: solid;
}

/* === Color Blindness Test === */
.plate-container {
  width: 280px;
  height: 280px;
  margin: 0 auto var(--sp-lg);
  border-radius: 50%;
  overflow: hidden;
  position: relative;
}
.plate-container canvas {
  width: 100%;
  height: 100%;
  border-radius: 50%;
}
.plate-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-sm);
  max-width: 320px;
  margin: 0 auto var(--sp-lg);
}
.plate-options button {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  padding: var(--sp-sm) var(--sp-md);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
  transition: border-color var(--t-fast), background var(--t-fast);
}
.plate-options button:hover { border-color: var(--accent); }
.plate-options button.correct { background: var(--ok); border-color: var(--ok); color: #fff; }
.plate-options button.wrong { background: var(--danger); border-color: var(--danger); color: #fff; }
.plate-progress {
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: var(--sp-md);
}

/* === Scroll Speed Test === */
.scroll-zone {
  min-height: 300px;
  overflow: hidden;
  border: 2px dashed var(--border);
  border-radius: var(--r-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-lg);
  cursor: ns-resize;
  transition: border-color var(--t-fast);
}
.scroll-zone.active {
  border-color: var(--accent);
  border-style: solid;
}
.scroll-indicator {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  transition: transform var(--t-fast);
}

/* === Number Memory Test === */
.number-display {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow);
  letter-spacing: 0.15em;
  text-align: center;
  padding: var(--sp-xl) 0;
  line-height: 1;
}
.number-input {
  font-family: var(--font-display);
  font-size: 2rem;
  text-align: center;
  background: var(--panel-alt);
  border: 2px solid var(--border);
  border-radius: var(--r-md);
  color: var(--text);
  padding: var(--sp-md);
  width: 100%;
  max-width: 400px;
  margin: 0 auto var(--sp-lg);
  display: block;
  outline: none;
  transition: border-color var(--t-fast);
}
.number-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.number-level {
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: var(--sp-md);
}

/* === Number Memory — Game Over Details === */
.game-over-details {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--sp-lg);
  margin-bottom: var(--sp-lg);
}
.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-sm) 0;
}
.detail-row + .detail-row {
  border-top: 1px solid var(--border);
}
.detail-label {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
}
.detail-value {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ok);
}
.wrong-value {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--danger);
}

/* === DPI — Measurement List === */
.tool-instructions {
  font-size: 0.9rem;
  color: var(--muted);
  text-align: center;
  margin-bottom: var(--sp-md);
}
.pixel-count {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  text-align: center;
  margin: var(--sp-sm) 0;
}
.measure-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
  margin-bottom: var(--sp-lg);
}
.measure-item {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: var(--sp-sm) var(--sp-md);
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--text);
}
.measure-avg {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
}