:root {
  --bg: #06070c;
  --bg-2: #0c0f19;
  --card: #121624;
  --card-2: #181d2f;
  --line: rgb(var(--ink-rgb) / 0.08);
  --text: #e8ebf5;
  --muted: #8a90a6;
  --cyan: #4de1ff;
  --violet: #8b5cff;
  --perfect: #5ef0ff;
  --great: #9d8bff;
  --good: #ffd166;
  --miss: #ff5c7a;
  --text-soft: #c9cfe0;
  --c1-rgb: 77 225 255;
  --c2-rgb: 139 92 255;
  --ink-rgb: 255 255 255;          /* lines, tracks and faint fills: white on dark themes, ink on light ones */
  --bg-rgb: 6 7 12;
  --on-accent: #07080d;            /* text on accent-coloured buttons */
  --font: Outfit, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --accent: linear-gradient(135deg, var(--cyan), var(--violet));
  --radius: 18px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --sal: env(safe-area-inset-left, 0px);
  --sar: env(safe-area-inset-right, 0px);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

body {
  background:
    radial-gradient(120% 60% at 50% -10%, rgb(var(--c2-rgb) / 0.18), transparent 60%),
    radial-gradient(90% 50% at 100% 110%, rgb(var(--c1-rgb) / 0.08), transparent 60%),
    var(--bg);
}

button { font: inherit; color: inherit; }

#app {
  position: relative;
  max-width: 480px;
  height: 100%;
  margin: 0 auto;
}

.hidden { display: none !important; }

/* ---------- screens ---------- */
.screen {
  display: none;
  flex-direction: column;
  gap: 16px;
  min-height: 100%;
  padding: calc(20px + var(--safe-top)) 16px calc(20px + var(--safe-bottom));
  animation: fadeIn 0.25s ease;
}
.screen.active { display: flex; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- brand ---------- */
.brand { text-align: center; padding: 28px 0 8px; }
.brand h1 {
  margin: 14px 0 6px;
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.tagline { margin: 0; color: var(--muted); font-size: 16px; }

.logo { display: inline-flex; gap: 6px; align-items: flex-end; height: 48px; }
.logo span {
  width: 14px;
  border-radius: 4px;
  background: var(--accent);
  animation: tile 1.2s ease-in-out infinite;
}
.logo span:nth-child(1) { height: 26px; animation-delay: 0s; }
.logo span:nth-child(2) { height: 44px; animation-delay: 0.15s; }
.logo span:nth-child(3) { height: 20px; animation-delay: 0.3s; }
.logo span:nth-child(4) { height: 36px; animation-delay: 0.45s; }
@keyframes tile { 0%, 100% { transform: translateY(0); opacity: 1; } 50% { transform: translateY(-6px); opacity: 0.7; } }

/* ---------- upload ---------- */
.dropzone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 190px;
  border-radius: 24px;
  border: 1.5px dashed rgb(var(--c2-rgb) / 0.45);
  background: rgb(var(--c2-rgb) / 0.06);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.1s;
}
.dropzone:active { transform: scale(0.99); }
.dropzone.drag { background: rgb(var(--c1-rgb) / 0.1); border-color: var(--cyan); }
.dropzone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop-icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: var(--accent);
  color: var(--on-accent);
  margin-bottom: 6px;
  box-shadow: 0 10px 30px rgb(var(--c2-rgb) / 0.35);
}
.drop-title { font-size: 20px; font-weight: 700; }
.drop-sub { color: var(--muted); font-size: 14px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.card h2 { margin: 0 0 12px; font-size: 18px; }

.song-head { display: flex; gap: 14px; align-items: center; margin-bottom: 14px; }
.song-art {
  flex: none;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background:
    linear-gradient(90deg, transparent 23%, rgba(0,0,0,.35) 23% 26%, transparent 26% 48%, rgba(0,0,0,.35) 48% 51%, transparent 51% 73%, rgba(0,0,0,.35) 73% 76%, transparent 76%),
    var(--accent);
}
.song-meta { min-width: 0; }
.song-title { font-size: 18px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.song-artist { color: var(--muted); font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 0 0 16px;
}
.info-grid div { background: var(--card-2); border-radius: 12px; padding: 10px; }
.info-grid dt { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; }
.info-grid dd { margin: 2px 0 0; font-weight: 600; font-size: 15px; }

.status { min-height: 1.2em; margin: 0; text-align: center; color: var(--muted); }
.status.error { color: var(--miss); }

.home-foot { margin-top: auto; text-align: center; display: flex; flex-direction: column; gap: 10px; align-items: center; }
.privacy { margin: 0; color: var(--muted); font-size: 13px; }
.linklike {
  background: none;
  border: 0;
  color: var(--cyan);
  font-size: 14px;
  padding: 10px;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--card-2);
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: transform 0.08s, filter 0.2s, opacity 0.2s;
}
.btn:active { transform: scale(0.98); }
.btn.big { width: 100%; min-height: 56px; font-size: 18px; border-radius: 16px; }
.btn.small { min-height: 40px; font-size: 14px; padding: 0 14px; }
.btn.primary { background: var(--accent); color: var(--on-accent); border: 0; box-shadow: 0 10px 30px rgb(var(--c2-rgb) / 0.3); }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: 0.4; cursor: default; box-shadow: none; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--card);
  cursor: pointer;
  flex: none;
  font-size: 22px;
  font-weight: 600;
}
.icon-btn.small { width: 44px; height: 40px; }

.topbar { display: flex; align-items: center; gap: 12px; }
.topbar-title { font-weight: 700; font-size: 17px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.bottom-actions {
  position: sticky;
  bottom: 0;
  z-index: 3;
  margin: auto -16px 0;
  padding: 16px 16px calc(4px + var(--safe-bottom));
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: linear-gradient(to bottom, rgb(var(--bg-rgb) / 0), var(--bg) 22px);
}

/* ---------- analysis ---------- */
.steps { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.steps li { position: relative; padding-left: 30px; color: var(--muted); transition: color 0.2s; }
.steps li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 18px;
  height: 18px;
  margin-top: -9px;
  border-radius: 50%;
  border: 2px solid rgb(var(--ink-rgb) / 0.15);
}
.steps li.active { color: var(--text); }
.steps li.active::before { border-color: var(--cyan); border-right-color: transparent; animation: spin 0.8s linear infinite; }
.steps li.done { color: var(--text); }
.steps li.done::before { background: var(--accent); border: 0; }
.steps li.done::after {
  content: '';
  position: absolute;
  left: 6px;
  top: 50%;
  width: 4px;
  height: 8px;
  margin-top: -6px;
  border: solid var(--on-accent);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
@keyframes spin { to { transform: rotate(360deg); } }

.progress { height: 6px; border-radius: 3px; background: rgb(var(--ink-rgb) / 0.08); overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: var(--accent); transition: width 0.2s; }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.stat { background: var(--card-2); border-radius: 12px; padding: 12px 8px; text-align: center; }
.stat-val { font-size: 20px; font-weight: 800; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.stat-lbl { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; margin-top: 2px; }

.timeline { width: 100%; height: 96px; display: block; border-radius: 12px; background: var(--bg-2); }
.legend { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.legend span {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 8px;
  background: var(--card-2);
  color: var(--muted);
}
.legend b { color: var(--text); margin-right: 4px; }
.fine { color: var(--muted); font-size: 13px; margin: 10px 0 0; line-height: 1.45; }

/* ---------- difficulty ---------- */
.diff-list { display: flex; flex-direction: column; gap: 10px; }
.diff {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  align-items: center;
  width: 100%;
  text-align: left;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1.5px solid var(--line);
  background: var(--card);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.diff[aria-checked="true"] { border-color: var(--cyan); background: linear-gradient(135deg, rgb(var(--c1-rgb) / .1), rgb(var(--c2-rgb) / .12)); }
.diff-name { font-size: 19px; font-weight: 800; }
.diff-stars { display: flex; gap: 3px; justify-self: end; }
.diff-stars i { width: 7px; height: 16px; border-radius: 2px; background: rgb(var(--ink-rgb) / 0.12); }
.diff-stars i.on { background: var(--accent); }
.diff-blurb { color: var(--muted); font-size: 13px; }
.diff-meta { color: var(--muted); font-size: 12px; justify-self: end; white-space: nowrap; }
.diff-best { grid-column: 1 / -1; font-size: 12px; color: var(--cyan); }

.settings { display: flex; flex-direction: column; gap: 16px; }
.setting-head { display: flex; justify-content: space-between; align-items: center; font-weight: 600; margin-bottom: 8px; }
.setting-head output { color: var(--cyan); font-variant-numeric: tabular-nums; }
.setting .fine { margin-top: 6px; }
.stepper { display: flex; align-items: center; gap: 14px; }
.stepper output { min-width: 24px; text-align: center; font-weight: 800; font-size: 18px; }

input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 32px; background: transparent; }
input[type=range]::-webkit-slider-runnable-track { height: 6px; border-radius: 3px; background: rgb(var(--ink-rgb) / 0.12); }
input[type=range]::-moz-range-track { height: 6px; border-radius: 3px; background: rgb(var(--ink-rgb) / 0.12); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 26px; height: 26px; margin-top: -10px; border-radius: 50%; background: var(--text); border: 4px solid var(--violet); }
input[type=range]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--text); border: 4px solid var(--violet); }

/* ---------- game ---------- */
.game-screen { padding: 0; gap: 0; position: fixed; inset: 0; max-width: none; background: #06070c; animation: none; }
#game-canvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; user-select: none; -webkit-user-select: none; }
.pause-btn { position: absolute; top: calc(12px + var(--safe-top)); left: calc(12px + var(--sal)); z-index: 2; background: rgb(var(--bg-rgb) / 0.7); backdrop-filter: blur(6px); }
.key-hint { position: absolute; bottom: calc(10px + var(--safe-bottom)); left: 0; right: 0; text-align: center; font-size: 12px; color: rgba(232,235,245,0.35); pointer-events: none; }
@media (hover: none) { .key-hint { display: none; } }

.overlay { position: absolute; inset: 0; z-index: 5; display: grid; place-items: center; background: rgb(var(--bg-rgb) / 0.75); backdrop-filter: blur(8px); padding: 16px; }
.overlay-card { width: min(360px, 100%); display: flex; flex-direction: column; gap: 10px; text-align: center; }
.overlay-card h2 { margin: 0 0 10px; font-size: 30px; }

/* ---------- results ---------- */
.results-head { text-align: center; padding-top: 18px; }
.grade {
  font-size: 108px;
  line-height: 1;
  font-weight: 800;
  background: var(--accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: pop 0.5s cubic-bezier(.2, 1.6, .4, 1);
}
@keyframes pop { from { transform: scale(0.4); opacity: 0; } to { transform: none; opacity: 1; } }
.badges { display: flex; justify-content: center; gap: 6px; min-height: 26px; margin: 6px 0; }
.badge { font-size: 12px; font-weight: 800; letter-spacing: 0.05em; padding: 4px 10px; border-radius: 999px; background: var(--accent); color: var(--on-accent); }
.r-song { font-weight: 700; font-size: 17px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.r-diff { color: var(--muted); font-size: 14px; }
.r-score { text-align: center; font-size: 42px; font-weight: 800; letter-spacing: -0.01em; margin-bottom: 14px; font-variant-numeric: tabular-nums; }
.judges { display: flex; flex-direction: column; gap: 8px; }
.judge-row { display: grid; grid-template-columns: 76px 1fr 48px; gap: 10px; align-items: center; font-size: 14px; font-weight: 700; }
.judge-bar { height: 8px; border-radius: 4px; background: rgb(var(--ink-rgb) / 0.06); overflow: hidden; }
.judge-bar i { display: block; height: 100%; border-radius: 4px; }
.judge-row .n { text-align: right; font-variant-numeric: tabular-nums; }
#btn-apply-offset { margin-top: 10px; }

@media (min-height: 800px) {
  .brand { padding-top: 48px; }
}

/* ---------- song library ---------- */
.library { padding: 16px 12px 10px; }
.library-head { display: flex; align-items: baseline; justify-content: space-between; padding: 0 6px 8px; }
.library-head h2 { margin: 0; }
.library-count { color: var(--muted); font-size: 13px; }
.lib-list { display: flex; flex-direction: column; }
.lib-row {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 64px;
  padding: 8px 6px;
  border: 0;
  border-top: 1px solid var(--line);
  background: none;
  text-align: left;
  cursor: pointer;
  border-radius: 12px;
  transition: background 0.15s;
}
.lib-row:first-child { border-top-color: transparent; }
.lib-row:hover, .lib-row:focus-visible { background: var(--card-2); }
.lib-row:active { transform: scale(0.99); }
.lib-art {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background:
    linear-gradient(90deg, transparent 23%, rgba(0,0,0,.3) 23% 26%, transparent 26% 48%, rgba(0,0,0,.3) 48% 51%, transparent 51% 73%, rgba(0,0,0,.3) 73% 76%, transparent 76%),
    linear-gradient(135deg, hsl(var(--h) 85% 62%), hsl(calc(var(--h) + 50) 80% 58%));
}
.lib-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.lib-title { font-weight: 700; font-size: 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lib-sub { color: var(--muted); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lib-side { flex: none; display: flex; flex-direction: column; align-items: flex-end; gap: 1px; min-width: 40px; }
.lib-grade { font-weight: 800; font-size: 18px; background: var(--accent); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lib-diff { font-size: 11px; color: var(--muted); }
.lib-ready { font-size: 12px; font-weight: 700; color: var(--cyan); }
.lib-spin { width: 18px; height: 18px; border-radius: 50%; border: 2px solid rgb(var(--ink-rgb) / .15); border-top-color: var(--cyan); animation: spin 0.8s linear infinite; }
.dropzone.compact { min-height: 110px; flex-direction: row; gap: 14px; border-radius: 18px; }
.dropzone.compact .drop-icon { width: 44px; height: 44px; border-radius: 14px; margin: 0; }
.dropzone.compact .drop-icon svg { width: 24px; height: 24px; }
.dropzone.compact .drop-title { font-size: 17px; }
.dropzone.compact .drop-sub { font-size: 13px; }
.drop-text { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.dropzone.compact .drop-text { align-items: flex-start; }
#diff-status:empty { display: none; }
.lib-item { display: flex; align-items: center; gap: 4px; border-top: 1px solid var(--line); }
.lib-item:first-child { border-top-color: transparent; }
.lib-item .lib-row { border-top: 0; flex: 1; min-width: 0; }
.lib-remove {
  flex: none;
  min-width: 36px;
  height: 36px;
  padding: 0 8px;
  border: 0;
  border-radius: 10px;
  background: none;
  color: var(--muted);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}
.lib-remove:hover { background: var(--card-2); color: var(--text); }
.lib-remove.armed { background: rgba(255, 92, 122, 0.15); color: var(--miss); font-size: 13px; font-weight: 700; }

/* ---------- play modes ---------- */
.diff-group { display: flex; align-items: center; gap: 12px; padding: 10px 4px 2px; }
.diff-group:first-child { padding-top: 0; }
.diff-group b { display: block; font-size: 16px; }
.diff-group span span { display: block; color: var(--muted); font-size: 13px; }
.mode-icon { flex: none; display: block; border: 2px solid var(--cyan); border-radius: 5px; box-shadow: 0 0 12px rgb(var(--c1-rgb) / 0.35); }
.mode-vertical { width: 18px; height: 30px; }
.mode-horizontal { width: 30px; height: 18px; border-color: var(--violet); box-shadow: 0 0 12px rgb(var(--c2-rgb) / 0.4); }
.rotate-phone {
  width: 46px; height: 78px; margin: 0 auto 18px;
  border: 3px solid var(--text); border-radius: 10px;
  animation: rotatePhone 1.8s ease-in-out infinite;
}
@keyframes rotatePhone { 0%, 25% { transform: rotate(0); } 60%, 100% { transform: rotate(-90deg); } }
@media (prefers-reduced-motion: reduce) { .rotate-phone { animation: none; transform: rotate(-90deg); } }
.overlay-card .fine { margin: 0 0 12px; }

/* ---------- tabs ---------- */
.tabbar {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  z-index: 20;
  width: 100%;
  max-width: 480px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 6px 8px calc(6px + var(--safe-bottom));
  background: rgb(var(--bg-rgb) / 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--line);
}
.tabbar button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  min-height: 52px;
  padding: 6px 0;
  border: 0;
  border-radius: 12px;
  background: none;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}
.tabbar svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.tabbar button[aria-current] { color: var(--text); }
.tabbar button[aria-current] svg { stroke: var(--cyan); }
.tabbar button:focus-visible { outline: 2px solid var(--cyan); }
#screen-home, .tab-screen { padding-bottom: calc(92px + var(--safe-bottom)); }
.tab-title { margin: 8px 0 0; font-size: 28px; font-weight: 800; letter-spacing: -0.01em; }
.section-title { margin: 10px 0 -4px; font-size: 17px; }
.section-note { margin: -4px 0 0; }

.home-chip { display: inline-flex; gap: 14px; margin-top: 14px; padding: 7px 14px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.home-chip:empty { display: none; }
.home-chip b { color: var(--text); }

/* ---------- profile / level ---------- */
.profile, .wallet { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.lv-badge {
  flex: none;
  display: grid;
  place-items: center;
  align-content: center;
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
}
.lv-badge span { font-size: 10px; letter-spacing: 0.1em; }
.lv-badge.small { width: 48px; height: 48px; border-radius: 15px; font-size: 19px; }
.profile-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.profile-rating { display: flex; align-items: baseline; gap: 8px; }
.profile-rating span { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; }
.profile-rating b { font-size: 26px; font-variant-numeric: tabular-nums; }
.exp-bar { height: 8px; border-radius: 4px; background: rgb(var(--ink-rgb) / 0.08); overflow: hidden; }
.exp-bar i { display: block; height: 100%; border-radius: 4px; background: var(--accent); }
.profile-main .fine { margin: 0; }
.wallet-msg { flex-basis: 100%; text-align: left; color: var(--cyan); }
.stat-row.four { grid-template-columns: repeat(4, 1fr); margin-bottom: 0; }
.stat-row.four .stat-val { font-size: 18px; }

/* ---------- records ---------- */
.records { display: flex; flex-direction: column; gap: 10px; }
.rec-song { padding: 14px; }
.rec-title { font-weight: 700; margin-bottom: 10px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.rec-cell { display: flex; flex-direction: column; gap: 2px; padding: 8px 10px; border-radius: 12px; background: var(--card-2); min-width: 0; }
.rec-cell.empty { opacity: 0.55; }
.rec-diff { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.rec-line { display: flex; align-items: center; gap: 6px; }
.rec-score { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.g { font-size: 18px; font-weight: 800; }
.g-AP, .g-SS { background: linear-gradient(135deg, #fff4b0, #ffa62b); -webkit-background-clip: text; background-clip: text; color: transparent; }
.g-S { color: var(--cyan); }
.g-A { color: #9fb6ff; }
.g-B { color: var(--great); }
.g-C { color: var(--good); }
.g-F { color: var(--miss); }
.rec-badge { font-size: 10px; font-weight: 800; letter-spacing: 0.06em; padding: 2px 6px; border-radius: 6px; background: rgb(var(--c1-rgb) / 0.15); color: var(--cyan); }
.rec-badge.ap { background: rgba(255, 209, 102, 0.18); color: var(--good); }
.rec-badge.fail { background: rgba(255, 92, 122, 0.15); color: var(--miss); }
.empty-note { color: var(--muted); }
.history { padding: 6px 14px; }
.hist-row { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.hist-row:first-child { border-top: 0; }
.hist-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.hist-title { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hist-sub { font-size: 12px; color: var(--muted); }
.hist-side { display: flex; align-items: center; gap: 8px; font-size: 13px; font-variant-numeric: tabular-nums; color: var(--muted); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.btn-row label.btn { cursor: pointer; }

/* ---------- shop + achievements ---------- */
.shop { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }
.shop-item { display: flex; flex-direction: column; gap: 8px; padding: 12px; border-radius: 16px; background: var(--card); border: 1px solid var(--line); }
.shop-item .btn { width: 100%; font-size: 13px; padding: 0 8px; }
.shop-name { font-weight: 700; }
.skin-preview { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; height: 44px; padding: 6px; border-radius: 10px; background: var(--bg-2); }
.skin-preview i { border-radius: 5px; }
.theme-preview { height: 44px; border-radius: 10px; }
.achievements { padding: 4px 14px; }
.ach { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.ach:first-child { border-top: 0; }
.ach-icon { flex: none; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; border: 2px solid rgb(var(--ink-rgb) / 0.15); font-weight: 800; color: var(--on-accent); }
.ach.done .ach-icon { background: var(--accent); border: 0; }
.ach-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.ach-main span { font-size: 13px; color: var(--muted); }
.ach-bar { height: 5px; margin-top: 5px; border-radius: 3px; background: rgb(var(--ink-rgb) / 0.08); overflow: hidden; }
.ach-bar i { display: block; height: 100%; background: var(--cyan); }
.ach-reward { flex: none; font-weight: 700; font-size: 13px; color: var(--good); }
.ach.done .ach-reward { color: var(--muted); }

/* ---------- guide ---------- */
.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; border-radius: 14px; background: var(--card); border: 1px solid var(--line); }
.segmented button { min-height: 42px; border: 0; border-radius: 10px; background: none; color: var(--muted); font-weight: 700; font-size: 15px; cursor: pointer; }
.segmented button[aria-selected="true"] { background: var(--card-2); color: var(--text); box-shadow: inset 0 0 0 1px rgb(var(--c1-rgb) / 0.4); }
.guide p { margin: 0 0 10px; line-height: 1.55; color: var(--text-soft); }
.guide p:last-child { margin-bottom: 0; }
.guide b { color: var(--text); }
.guide code, kbd { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; padding: 1px 6px; border-radius: 6px; background: var(--card-2); border: 1px solid var(--line); color: var(--text); }
.notes-legend { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.notes-legend li { display: flex; gap: 12px; align-items: flex-start; }
.notes-legend svg { flex: none; width: 40px; height: 40px; border-radius: 10px; background: var(--bg-2); }
.notes-legend div { display: flex; flex-direction: column; gap: 2px; line-height: 1.45; }
.notes-legend span { color: var(--text-soft); font-size: 14px; }
.notes-legend em { font-style: normal; font-size: 11px; font-weight: 700; color: var(--violet); text-transform: uppercase; letter-spacing: 0.05em; }

/* ---------- results: clear + rewards ---------- */
.clear-banner { display: inline-block; margin-bottom: 6px; padding: 5px 14px; border-radius: 999px; font-size: 13px; font-weight: 800; letter-spacing: 0.12em; background: rgb(var(--c1-rgb) / 0.14); color: var(--cyan); }
.clear-banner.fail { background: rgba(255, 92, 122, 0.15); color: var(--miss); }
.clear-banner.fc { background: rgba(182, 155, 255, 0.18); color: #d7c8ff; }
.clear-banner.ap { background: rgba(255, 209, 102, 0.18); color: var(--good); }
.grade.g-F { background: linear-gradient(135deg, #ff9fb0, #ff5c7a); -webkit-background-clip: text; background-clip: text; }
.grade.g-AP, .grade.g-SS { background: linear-gradient(135deg, #fff4b0, #ffa62b); -webkit-background-clip: text; background-clip: text; }
.r-gauge { color: var(--muted); font-size: 13px; margin-top: 2px; }
.rewards-card h2 { margin-bottom: 10px; }
.reward-lines { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.reward { display: flex; justify-content: space-between; font-size: 15px; }
.reward b { color: var(--good); font-variant-numeric: tabular-nums; }
.reward.bonus span { color: var(--muted); }
.lv-row { display: flex; align-items: center; gap: 12px; margin: 6px 0 10px; }
.rewards-card .fine b { color: var(--text); }
.up { color: var(--cyan); font-weight: 700; }
.unlocks { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.unlock { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; border-radius: 12px; background: rgba(255, 209, 102, 0.1); border: 1px solid rgba(255, 209, 102, 0.3); }
.unlock span { font-size: 13px; color: var(--muted); }
.diff-name .lv { font-size: 13px; font-weight: 700; color: var(--cyan); margin-left: 6px; vertical-align: 2px; }

/* Results scroll to their buttons instead of pinning them over the rewards. */
#screen-results .bottom-actions { position: static; margin-top: 0; background: none; padding-top: 0; }
.unlock em { font-style: normal; color: var(--good); font-weight: 700; margin-left: 4px; }

/* ---------- rename + song parts ---------- */
.brand h1 { font-size: clamp(30px, 9vw, 40px); text-wrap: balance; }
.segmented.parts { grid-template-columns: repeat(3, 1fr); }
.segmented.parts button { display: flex; flex-direction: column; align-items: center; gap: 2px; min-height: 52px; font-size: 14px; }
.segmented.parts button span { font-size: 11px; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; }
.segmented button[aria-checked="true"] { background: var(--card-2); color: var(--text); box-shadow: inset 0 0 0 1px rgb(var(--c1-rgb) / 0.4); }
.part-note { margin: -8px 0 0; }
.lib-part { display: flex; align-items: center; gap: 10px; width: 100%; min-height: 44px; padding: 6px 8px 6px 30px; border: 0; border-radius: 10px; background: none; text-align: left; cursor: pointer; }
.lib-part:hover, .lib-part:focus-visible { background: var(--card-2); }
.lib-part-dot { flex: none; width: 8px; height: 8px; border-radius: 50%; border: 2px solid var(--violet); }
.lib-part-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.lib-part-name { font-size: 14px; font-weight: 700; }
.lib-part-sub { font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lib-grade.small { font-size: 15px; }
.rec-part { margin: 10px 0 6px; font-size: 12px; font-weight: 700; color: var(--violet); text-transform: uppercase; letter-spacing: 0.06em; }
.rec-song .rec-part:first-of-type { margin-top: 0; }
.pack-btn { cursor: pointer; }

/* ---------- cloud library ---------- */
.cloud { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; }
.cloud .btn-row { margin-top: 10px; }
.cloud-head { display: flex; align-items: center; gap: 12px; }
.cloud-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.cloud-text span { font-size: 13px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; }
.cloud-line { color: var(--text) !important; }
.cloud-icon {
  flex: none; width: 40px; height: 40px; border-radius: 12px; background: var(--card-2);
  -webkit-mask: none;
  position: relative;
}
.cloud-icon::before {
  content: ''; position: absolute; inset: 9px 6px 11px;
  border-radius: 20px 20px 8px 8px; border: 2px solid var(--muted);
}
.cloud-icon.on { background: rgb(var(--c1-rgb) / 0.14); }
.cloud-icon.on::before { border-color: var(--cyan); }
.cloud-error { text-align: left; margin-top: 8px; }
.lib-art.cloud { opacity: 0.55; outline: 2px dashed rgb(var(--c1-rgb) / 0.6); outline-offset: -2px; }
.overlay.fixed { position: fixed; z-index: 40; overflow-y: auto; align-items: start; }
.cloud-dialog { text-align: left; gap: 12px; padding: 20px 0; }
.cloud-dialog h2 { margin: 0; font-size: 24px; }
.cloud-dialog .fine { margin: 0; }
.cloud-steps { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 10px; color: var(--text-soft); line-height: 1.5; font-size: 14px; }
.cloud-steps a { display: inline-block; margin-top: 2px; color: var(--cyan); font-weight: 600; }
.cloud-steps code { font-size: 12px; padding: 1px 5px; border-radius: 5px; background: var(--card-2); }
.field { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: 14px; }
.field input {
  min-height: 46px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--card); color: var(--text); font: inherit; font-weight: 500;
}
.field input:focus { outline: 2px solid var(--cyan); outline-offset: 1px; }

/* ---------- install hint + sync test ---------- */
.install { border-color: rgb(var(--c1-rgb) / 0.35); background: linear-gradient(135deg, rgb(var(--c1-rgb) / .08), rgb(var(--c2-rgb) / .1)); }
.install-head { display: flex; align-items: center; justify-content: space-between; font-size: 16px; }
.install p, .install ol { margin: 8px 0 0; color: var(--text-soft); line-height: 1.5; font-size: 14px; }
.install ol { padding-left: 20px; }
.share-glyph { display: inline-block; width: 12px; height: 12px; border: 2px solid currentColor; border-top-color: transparent; border-radius: 2px; vertical-align: -1px; position: relative; }
.share-glyph::before { content: ''; position: absolute; left: 3px; top: -7px; width: 2px; height: 11px; background: currentColor; }
#btn-calibrate { margin-top: 8px; }
.calib-card { text-align: center; }
.calib-card .fine { margin: 0 0 6px; text-align: left; }
.calib-pad {
  width: 180px; height: 180px; margin: 10px auto; border-radius: 50%;
  border: 3px solid var(--cyan); background: rgb(var(--c1-rgb) / 0.08);
  touch-action: manipulation; cursor: pointer; transition: transform 0.08s, background 0.2s;
}
.calib-pad.hit { animation: calibHit 0.18s ease-out; }
@keyframes calibHit { from { transform: scale(0.94); background: rgb(var(--c1-rgb) / 0.35); } to { transform: none; } }
.calib-count { margin: 0; font-weight: 700; }
.rotate-tip { color: var(--cyan) !important; }

/* ---------- picture themes ---------- */
#bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--bg);
  background-size: cover;
  background-repeat: no-repeat;
  pointer-events: none;
}
#bg-layer::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgb(var(--bg-rgb) / 0.18), rgb(var(--bg-rgb) / 0.5) 55%, rgb(var(--bg-rgb) / 0.72));
}
html.has-bg, html.has-bg body { background: transparent; }
html.has-bg { background-color: var(--bg); }
html.has-bg .card,
html.has-bg .diff,
html.has-bg .shop-item,
html.has-bg .home-chip,
html.has-bg .segmented,
html.has-bg .dropzone,
html.has-bg .overlay-card {
  -webkit-backdrop-filter: blur(12px) saturate(1.1);
  backdrop-filter: blur(12px) saturate(1.1);
}
html.has-bg .card, html.has-bg .diff, html.has-bg .shop-item { box-shadow: 0 8px 28px rgb(var(--bg-rgb) / 0.25); }
html.has-bg .dropzone { background: rgb(var(--c2-rgb) / 0.1); }
html.has-bg .brand h1 { filter: drop-shadow(0 2px 10px rgb(var(--bg-rgb) / 0.55)); }
html.has-bg .tagline, html.has-bg .privacy, html.has-bg .tab-title, html.has-bg .section-title, html.has-bg .section-note, html.has-bg .results-head { text-shadow: 0 1px 8px rgb(var(--bg-rgb) / 0.7); }
html[data-tone="light"] .overlay { background: rgb(var(--bg-rgb) / 0.55); }
html[data-tone="light"] .btn.primary { box-shadow: 0 8px 22px rgb(var(--c1-rgb) / 0.35); }

/* Light pictures: a milky wash instead of a tinted one, so dark text reads on any part of the picture. */
html[data-tone="light"] #bg-layer::after {
  background: linear-gradient(180deg, rgb(var(--bg2-rgb) / 0.62), rgb(var(--bg2-rgb) / 0.42) 45%, rgb(var(--bg2-rgb) / 0.66));
}
html[data-tone="light"].has-bg .brand h1 { filter: drop-shadow(0 1px 6px rgb(var(--bg2-rgb) / 0.9)); }
html[data-tone="light"].has-bg .tagline, html[data-tone="light"].has-bg .privacy, html[data-tone="light"].has-bg .tab-title,
html[data-tone="light"].has-bg .section-title, html[data-tone="light"].has-bg .section-note, html[data-tone="light"].has-bg .results-head,
html[data-tone="light"].has-bg .linklike, html[data-tone="light"].has-bg .status {
  text-shadow: 0 0 6px rgb(var(--bg2-rgb) / 0.95), 0 0 2px rgb(var(--bg2-rgb));
}
html[data-tone="light"].has-bg .dropzone { background: rgb(var(--bg2-rgb) / 0.55); }
html[data-tone="light"].has-bg .tabbar { background: rgb(var(--bg2-rgb) / 0.82); }

/* Theme picker */
.theme-pics { display: grid; gap: 10px; justify-items: start; margin: 4px 0 14px; padding: 12px 14px; border-radius: 16px; background: var(--card); border: 1px dashed rgb(var(--c1-rgb) / 0.45); }
.theme-pics .fine { margin: 0; }
.theme-pics .status { text-align: left; }
.theme-pics .status:empty { display: none; }
.theme-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.theme-card {
  display: flex; flex-direction: column; gap: 8px; padding: 8px 8px 10px;
  border-radius: 16px; border: 2px solid var(--line); background: var(--card);
  color: var(--text); text-align: left; cursor: pointer; font: inherit;
}
.theme-card[aria-checked="true"] { border-color: var(--cyan); }
.theme-thumb { position: relative; aspect-ratio: 16 / 9; max-width: 100%; border-radius: 11px; background-size: cover; background-position: center; overflow: hidden; }
.theme-swatches { position: absolute; left: 6px; bottom: 6px; display: flex; gap: 4px; }
.theme-swatches i { width: 14px; height: 14px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, 0.85); }
.theme-name { font-weight: 800; padding: 0 2px; }
.theme-state { font-size: 12px; color: var(--muted); padding: 0 2px; }
.theme-card[aria-checked="true"] .theme-state { color: var(--cyan); font-weight: 700; }