/* ============== Series Dash ============== */

:root {
  --bg-0: #0c0e14;
  --bg-1: #131722;
  --bg-2: #1a2030;
  --ink: #e9eef7;
  --ink-dim: #95a0b6;
  --accent: #7cf6d9;
  --accent-2: #b48cff;
  --good: #5dd28b;
  --bad:  #ff6b6b;
  --warn: #ffd34a;
  --line: rgba(255,255,255,0.08);
  --serif: 'Latin Modern Roman', 'Cambria', 'Georgia', serif;
  --sans:  'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono:  'JetBrains Mono', 'SFMono-Regular', Menlo, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: radial-gradient(1200px 700px at 30% -10%, #1d2335 0%, var(--bg-0) 60%) fixed;
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

.screen {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 24px 80px;
}

#welcome-screen, #mode-screen, #game-over-screen {
  text-align: center;
  padding-top: 80px;
}

/* ---------- Welcome ---------- */
.welcome-form {
  max-width: 460px;
  margin: 30px auto 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.welcome-form label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--ink-dim);
}
.welcome-form .optional {
  font-size: 11px;
  text-transform: none;
  letter-spacing: 0;
  font-style: italic;
  color: rgba(149, 160, 182, 0.7);
}
.welcome-form input[type="text"] {
  width: 320px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--accent);
  border-radius: 10px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  text-align: center;
  padding: 12px 16px;
  letter-spacing: 0.4px;
}
.welcome-form input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}

/* ---------- Game head (pills row) ---------- */
.game-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.player-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  color: var(--ink);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--line);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ---------- Branding ---------- */
.brand {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 84px;
  letter-spacing: -2px;
  margin: 12px 0 4px;
  background: linear-gradient(120deg, var(--ink) 0%, var(--accent) 60%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand.small { font-size: 52px; }
.brand .dash {
  font-style: italic;
  margin-left: 6px;
}
.tagline {
  color: var(--ink-dim);
  font-size: 18px;
  margin: 0 0 32px;
}
.rules {
  max-width: 640px;
  margin: 0 auto 28px;
  text-align: left;
  background: var(--bg-1);
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
}
.rules ul { margin: 0; padding-left: 18px; line-height: 1.6; color: var(--ink-dim); font-size: 15px; }
.rules b { color: var(--ink); }
.hint { color: var(--ink-dim); font-size: 14px; margin-top: 24px; }
.hint kbd {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 6px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
}

.big-btn {
  font-family: var(--sans);
  font-size: 22px;
  font-weight: 600;
  padding: 16px 56px;
  background: linear-gradient(140deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #0a0d14;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: 0.4px;
  box-shadow: 0 12px 36px -10px var(--accent);
  transition: transform 80ms ease;
}
.big-btn:hover { transform: translateY(-1px); }
.big-btn:active { transform: translateY(1px); }

.secondary-btn {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 22px;
  background: transparent;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: 0.2px;
  transition: color 120ms ease, border-color 120ms ease;
}
.secondary-btn:hover {
  color: var(--ink);
  border-color: var(--accent-2);
}

.over-actions {
  margin-top: 28px;
  display: flex;
  gap: 14px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

/* ---------- Mode select ---------- */
.mode-select {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 320px));
  gap: 18px;
  justify-content: center;
  margin: 8px auto 22px;
}
.mode-card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px 24px 24px;
  text-align: left;
  color: var(--ink);
  cursor: pointer;
  font-family: var(--sans);
  transition: transform 100ms ease, border-color 120ms ease, box-shadow 120ms ease;
  box-shadow: 0 12px 28px -20px rgba(0,0,0,0.5);
}
.mode-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 18px 40px -20px var(--accent);
}
.mode-card.stress:hover {
  border-color: var(--accent-2);
  box-shadow: 0 18px 40px -20px var(--accent-2);
}
.mode-card .mode-name {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.5px;
  background: linear-gradient(120deg, var(--ink) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 6px;
}
.mode-card.stress .mode-name {
  background: linear-gradient(120deg, var(--ink) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.mode-card .mode-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
  margin-bottom: 10px;
  letter-spacing: 0.3px;
}
.mode-card .mode-blurb {
  font-size: 14px;
  color: var(--ink-dim);
}

/* ---------- Mode pill (in-game) ---------- */
.mode-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(124, 246, 217, 0.08);
  border: 1px solid rgba(124, 246, 217, 0.25);
  padding: 4px 12px;
  border-radius: 999px;
}
.mode-pill[data-mode="stress"] {
  color: var(--accent-2);
  background: rgba(180, 140, 255, 0.08);
  border-color: rgba(180, 140, 255, 0.25);
}

/* ---------- HUD ---------- */
.hud {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  padding: 4px 0 18px;
}
.hud-item {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-variant-numeric: tabular-nums;
}
.hud-item .lbl {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--ink-dim);
}
.hud-item span:last-child {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
}

/* ---------- Timer ---------- */
.timer-shell {
  position: relative;
  height: 14px;
  background: var(--bg-1);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 24px;
  border: 1px solid var(--line);
}
.timer-bar {
  position: absolute;
  inset: 0 auto 0 0;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--good) 0%, var(--warn) 60%, var(--bad) 100%);
  transition: width 80ms linear;
}
.timer-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: #0a0d14;
  letter-spacing: 1px;
  mix-blend-mode: screen;
}

/* ---------- Series stage ---------- */
.series-stage {
  display: flex;
  justify-content: center;
  margin-bottom: 28px;
}
.series-frame {
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 36px 48px;
  min-height: 160px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 24px 64px -28px rgba(0,0,0,0.6);
}
.series {
  font-size: 30px;
  color: var(--ink);
  text-align: center;
}

/* ---------- Buttons grid ---------- */
.buttons-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.tests-wrap {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}
.test-btn {
  position: relative;
  background: var(--bg-1);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  cursor: pointer;
  font-family: var(--sans);
  text-align: left;
  transition: transform 80ms ease, border-color 120ms ease, background 120ms ease;
}
.test-btn:hover:not(.disabled) {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.test-btn .num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  background: rgba(255,255,255,0.04);
  padding: 1px 6px;
  border-radius: 5px;
}
.test-btn .lbl {
  font-size: 15px;
  font-weight: 600;
}
.test-btn .short {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.5px;
}
.test-btn.correct {
  background: rgba(93, 210, 139, 0.18);
  border-color: var(--good);
}
.test-btn.wrong {
  background: rgba(255, 107, 107, 0.18);
  border-color: var(--bad);
}
.test-btn.disabled {
  cursor: default;
  opacity: 0.78;
}

/* ---------- Get-ready countdown overlay ---------- */
.ready-card {
  text-align: center;
  user-select: none;
}
.ready-label {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 18px;
}
.ready-num {
  font-family: var(--serif);
  font-size: 220px;
  font-weight: 600;
  line-height: 1;
  background: linear-gradient(120deg, var(--ink) 0%, var(--accent) 60%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: ready-pulse 1s ease-out;
}
.ready-num.go {
  font-size: 160px;
  letter-spacing: 6px;
}
@keyframes ready-pulse {
  0%   { transform: scale(0.7); opacity: 0; }
  35%  { transform: scale(1.1); opacity: 1; }
  100% { transform: scale(1.0); opacity: 1; }
}

/* ---------- Conv/Div bonus overlay ---------- */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 11, 20, 0.78);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.conv-modal {
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
  border: 1px solid rgba(180, 140, 255, 0.3);
  border-radius: 18px;
  padding: 28px 32px;
  width: 92%;
  max-width: 720px;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.7);
}
.conv-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.conv-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(124, 246, 217, 0.08);
  border: 1px solid rgba(124, 246, 217, 0.25);
  padding: 4px 12px;
  border-radius: 999px;
}
.conv-timer-text {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}
.conv-timer-shell {
  height: 8px;
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 22px;
}
.conv-timer-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--accent-2) 0%, var(--accent) 100%);
  transition: width 80ms linear;
}
.conv-series {
  text-align: center;
  font-size: 26px;
  color: var(--ink);
  padding: 18px 12px;
  margin-bottom: 12px;
}
.conv-prompt {
  text-align: center;
  font-size: 16px;
  color: var(--ink-dim);
  margin: 0 0 16px;
}
.conv-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}
.conv-pick {
  background: var(--bg-2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 12px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease, transform 80ms ease;
}
.conv-pick kbd {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0 5px;
  font-family: var(--mono);
  font-size: 10px;
  margin-left: 6px;
  color: var(--ink-dim);
  text-transform: uppercase;
}
.conv-pick:hover:not(:disabled) { border-color: var(--accent-2); transform: translateY(-1px); }
.conv-pick.correct { background: rgba(93, 210, 139, 0.18); border-color: var(--good); }
.conv-pick.wrong   { background: rgba(255, 107, 107, 0.18); border-color: var(--bad); }
.conv-pick.disabled, .conv-pick:disabled { cursor: default; opacity: 0.78; }
.conv-skip { color: var(--ink-dim); font-weight: 500; }
.conv-hint {
  text-align: center;
  font-size: 12px;
  color: var(--ink-faint, rgba(149,160,182,0.6));
  margin: 14px 0 0;
}

/* ---------- Feedback ---------- */
.feedback {
  margin-top: 20px;
  min-height: 30px;
  text-align: center;
  font-size: 18px;
  color: var(--ink-dim);
  font-weight: 500;
}
.feedback.ok  { color: var(--good); }
.feedback.bad { color: var(--bad); }
.feedback .delta { color: var(--accent); font-weight: 700; }
.feedback .alt-note,
.review-item .alt-note { font-weight: 400; font-size: 0.78em; color: var(--ink-dim); font-style: italic; margin-left: 4px; }
.feedback .bonus.good { color: var(--accent-2); font-size: 14px; }
.feedback .bonus.bad  { color: var(--warn); font-size: 14px; }

/* ---------- Game over ---------- */
.final-line {
  font-size: 20px;
  color: var(--ink-dim);
  margin: 6px 0;
}
.final-line .num {
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 700;
  font-size: 28px;
  margin-left: 8px;
}
.final-line.hi-beat .num {
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.new-hi-badge {
  display: inline-block;
  margin-left: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #0a0d14;
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
  box-shadow: 0 8px 24px -10px var(--accent-2);
  vertical-align: middle;
  animation: new-hi-pulse 1.4s ease-in-out infinite;
}
@keyframes new-hi-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.06); }
}

/* ---------- Review list ---------- */
.review-section {
  max-width: 900px;
  margin: 36px auto 0;
  text-align: left;
}
.review-section h3 {
  font-family: var(--serif);
  font-size: 22px;
  margin: 0 0 14px;
  color: var(--ink);
  text-align: center;
  letter-spacing: -0.5px;
}
.review-section .review-help {
  text-align: center;
  color: var(--ink-dim);
  font-size: 13px;
  margin: -8px 0 18px;
}
.review-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 520px;
  overflow-y: auto;
  padding-right: 6px;
}
.review-item {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ink-dim);
  border-radius: 12px;
  padding: 12px 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 18px;
  align-items: center;
}
.review-item.correct  { border-left-color: var(--good); }
.review-item.wrong    { border-left-color: var(--bad); }
.review-item .review-series {
  grid-column: 1 / -1;
  font-size: 18px;
  color: var(--ink);
  text-align: left;
}
.review-item .review-row {
  font-size: 13px;
  color: var(--ink-dim);
  font-family: var(--mono);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.review-item .review-row .lbl {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: rgba(149, 160, 182, 0.65);
  margin-right: 4px;
}
.review-item .pick-tag, .review-item .ans-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 5px;
  font-family: var(--mono);
  font-size: 12px;
}
.review-item .pick-tag.ok    { color: var(--good); background: rgba(93, 210, 139, 0.12); }
.review-item .pick-tag.err   { color: var(--bad);  background: rgba(255, 107, 107, 0.12); }
.review-item .pick-tag.miss  { color: var(--warn); background: rgba(255, 211, 74, 0.12); }
.review-item .ans-tag         { color: var(--ink); background: rgba(255,255,255,0.04); }
.review-item .conv-tag.right  { color: var(--accent-2); }
.review-item .conv-tag.bad    { color: var(--bad); }
.review-item .conv-tag.skip   { color: var(--ink-dim); }

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
  .hud { grid-template-columns: repeat(2, 1fr); }
  .tests-wrap { grid-template-columns: repeat(2, 1fr); }
  .brand { font-size: 60px; }
  .series { font-size: 22px; }
  .series-frame { padding: 22px 18px; min-height: 110px; }
}