:root {
  --bg: #0c1014;
  --panel: #11161c;
  --ink: #e6edf3;
  --ink-dim: rgba(230, 237, 243, 0.55);
  --faint: rgba(230, 237, 243, 0.16);
  --ghost: rgba(230, 237, 243, 0.08);
  --signal: #2ed9ff;
  --truth: #4bd88a;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

#app {
  width: 100%;
  max-width: 920px;
  min-height: 100dvh;
  margin: 0 auto;
  padding: 10px 16px max(24px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

/* Header */
#hdr {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px;
  font-family: var(--mono);
}

.hdr-left {
  display: flex;
  align-items: baseline;
  gap: 12px;
  letter-spacing: 0.22em;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
}

.brand:hover {
  color: var(--signal);
}

#hdr-no {
  color: var(--ink-dim);
  font-size: 14px;
  letter-spacing: 0.1em;
}

.hdr-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--faint);
  color: var(--ink-dim);
  padding: 4px 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  transition: all 0.15s ease;
  user-select: none;
}

.icon-btn:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.icon-btn.active {
  border-color: var(--signal);
  color: var(--signal);
}

/* Main Area */
#main {
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#stage {
  position: relative;
  width: min(100%, 880px, calc((100dvh - 120px) * 1.6));
  aspect-ratio: 8 / 5;
  border: 1px solid var(--faint);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  background: var(--bg);
}

#cv {
  display: block;
  width: 100%;
  height: 100%;
}

#hud {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

#hud > * {
  pointer-events: auto;
}

.chip {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translate(-50%);
  font-family: var(--mono);
  font-size: 14px;
  color: var(--ink-dim);
  background: var(--panel);
  border: 1px solid var(--faint);
  padding: 8px 14px;
  white-space: nowrap;
  pointer-events: none !important;
  z-index: 5;
}

.chip b {
  color: var(--signal);
  font-size: 16px;
  font-weight: 700;
}

/* Buttons */
.btn {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  min-height: 48px;
  min-width: 130px;
  padding: 10px 24px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  touch-action: manipulation;
}

.btn:hover {
  background: rgba(230, 237, 243, 0.08);
}

.btn.primary {
  background: var(--signal);
  color: #05242d;
  border-color: var(--signal);
  font-weight: 700;
}

.btn.primary:hover {
  background: #64e3ff;
  border-color: #64e3ff;
}

.btn:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* Screen / Cards */
#screen {
  width: 100%;
}

.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
  padding: 40px 16px;
}

.card .step {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.35em;
  color: var(--ink-dim);
  text-transform: uppercase;
}

.card .tag {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 700;
}

.card p {
  font-size: 17px;
  line-height: 1.55;
  max-width: 480px;
  color: var(--ink);
}

.wordmark {
  font-family: var(--mono);
  font-size: clamp(32px, 8vw, 54px);
  font-weight: 700;
  letter-spacing: 0.3em;
  margin-right: -0.3em;
}

.emoji-row {
  font-size: 26px;
  letter-spacing: 0.4em;
  margin-right: -0.4em;
}

/* Count Form */
.count-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  background: #0c1014f0;
  border: 1px solid var(--faint);
  padding: 24px 28px;
  backdrop-filter: blur(8px);
  border-radius: 4px;
}

.count-form label {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
}

.count-form input {
  font-family: var(--mono);
  font-size: 36px;
  text-align: center;
  width: 140px;
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--signal);
  color: var(--signal);
  padding: 2px 4px 6px;
  outline: none;
}

/* Results Screen */
.results {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 12px 0 28px;
  text-align: center;
  width: 100%;
}

.results .step {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.35em;
  color: var(--ink-dim);
}

.total {
  font-family: var(--mono);
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.total-num {
  font-size: 72px;
  font-weight: 700;
  line-height: 1;
}

.total-grade {
  font-size: 44px;
  font-weight: 700;
  color: var(--signal);
}

.radar-wrap {
  width: min(360px, 92vw);
}

.radar {
  width: 100%;
  height: auto;
  display: block;
}

.rows {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--mono);
}

.row {
  display: grid;
  grid-template-columns: 28px 76px 1fr 44px 22px;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--faint);
  font-size: 14px;
  text-align: left;
  border-radius: 2px;
}

.row .human {
  color: var(--ink-dim);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.row .pct {
  color: var(--signal);
  opacity: 0.85;
}

.row .pts {
  text-align: right;
  color: var(--signal);
  font-weight: 700;
  font-size: 16px;
}

.row .grade {
  text-align: center;
  color: var(--ink-dim);
}

.stats-line {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-dim);
  max-width: 480px;
  padding: 0 10px;
}

.nav-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 10px;
}

/* Practice Select Grid */
.practice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 8px;
  width: 100%;
  max-width: 480px;
  margin-top: 8px;
}

.practice-card {
  border: 1px solid var(--faint);
  background: var(--panel);
  padding: 12px 10px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink);
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
  user-select: none;
}

.practice-card:hover {
  border-color: var(--signal);
  color: var(--signal);
}

.practice-card .p-emoji {
  font-size: 20px;
  display: block;
  margin-bottom: 4px;
}

/* Archive */
.archive {
  gap: 14px;
}

.arch-list {
  width: 100%;
  max-width: 460px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 60vh;
  overflow-y: auto;
  padding-right: 4px;
}

.arch-row {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: 10px;
  align-items: center;
  min-height: 48px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--faint);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  border-radius: 2px;
}

.arch-row:hover, .arch-row:focus-visible {
  border-color: var(--ink-dim);
  background: rgba(230, 237, 243, 0.04);
}

.arch-no {
  color: var(--ink-dim);
}

.arch-score {
  color: var(--signal);
  font-weight: 700;
}

.footer {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-dim);
  margin-top: 8px;
  text-align: center;
  padding: 0 10px;
}

/* Toast */
#toast {
  position: fixed;
  bottom: max(30px, env(safe-area-inset-bottom));
  left: 50%;
  transform: translate(-50%);
  background: var(--ink);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 14px;
  padding: 10px 18px;
  border-radius: 2px;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

/* Accessibility / Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

/* Mobile Adjustments */
@media (max-width: 540px) {
  #app {
    padding: 8px 10px max(16px, env(safe-area-inset-bottom));
    gap: 6px;
  }
  
  .card {
    padding: 24px 8px;
    gap: 16px;
  }

  .card p {
    font-size: 15px;
  }

  .btn {
    min-width: 110px;
    padding: 8px 16px;
    font-size: 14px;
  }

  .row {
    grid-template-columns: 24px 62px 1fr 38px 20px;
    padding: 8px 10px;
    font-size: 13px;
  }
  
  .total-num {
    font-size: 60px;
  }
  
  .total-grade {
    font-size: 38px;
  }
}

/* Leaderboard Styles */
.lb-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.lb-tab {
  padding: 8px 18px;
  background: transparent;
  border: 1px solid var(--faint);
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 13px;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s ease;
}

.lb-tab:hover {
  border-color: var(--ink-dim);
  color: var(--ink);
}

.lb-tab.active {
  border-color: var(--signal);
  color: var(--signal);
  font-weight: 700;
  background: var(--ghost);
}

.lb-user-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 480px;
  padding: 8px 14px;
  background: var(--panel);
  border: 1px solid var(--faint);
  font-family: var(--mono);
  font-size: 13px;
  margin-bottom: 8px;
  border-radius: 2px;
}

.lb-user-bar .nick-name {
  color: var(--signal);
  font-weight: 700;
}

.lb-list {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 52vh;
  overflow-y: auto;
  padding-right: 2px;
}

.lb-row {
  display: grid;
  grid-template-columns: 38px 1fr auto 36px;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--faint);
  background: transparent;
  font-family: var(--mono);
  font-size: 14px;
  text-align: left;
  border-radius: 2px;
}

.lb-row.is-me {
  border-color: var(--signal);
  background: rgba(46, 217, 255, 0.06);
}

.lb-rank {
  font-weight: 700;
  color: var(--ink-dim);
}

.lb-rank.gold { color: #ffd700; }
.lb-rank.silver { color: #c0c0c0; }
.lb-rank.bronze { color: #cd7f32; }

.lb-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 600;
}

.lb-score {
  text-align: right;
  color: var(--signal);
  font-weight: 700;
  font-size: 16px;
}

.lb-grade {
  text-align: center;
  color: var(--ink-dim);
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  backdrop-filter: blur(4px);
}

.modal-content {
  background: var(--panel);
  border: 1px solid var(--faint);
  padding: 24px;
  max-width: 380px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: center;
  border-radius: 4px;
}

.modal-content label {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-dim);
}

.modal-content input {
  background: var(--bg);
  border: 1px solid var(--faint);
  color: var(--signal);
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 16px;
  outline: none;
  text-align: center;
  border-radius: 2px;
}

.modal-content input:focus {
  border-color: var(--signal);
}

/* Survival Mode Styles */
.survival-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 480px;
  padding: 10px 16px;
  background: var(--panel);
  border: 1px solid var(--faint);
  font-family: var(--mono);
  font-size: 14px;
  margin-bottom: 8px;
}

.survival-hearts {
  letter-spacing: 4px;
}

.survival-streak-badge {
  color: var(--signal);
  font-weight: 700;
}