:root {
  /* Studio-meter design system (brief Part 8): warm console charcoal, amber as
     the sole accent, signal-green only for measured values, danger-red only for
     defects. Measurements render in the mono face. */
  --bg: #16171A; --bg-raised: #1E2024; --bg-inset: #101113; --line: #2C2F35;
  --text: #EDEAE4; --text-dim: #9B998F;
  --amber: #E8A33D; --amber-hot: #F5B95C;
  --signal: #7BC47F;   /* verified/measured values only */
  --danger: #D96C57;   /* defect markers only */
  --font-display: "Archivo", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;
  --radius: 6px; --radius-lg: 10px;
  --shadow-raise: 0 1px 0 rgba(255,255,255,.04) inset, 0 8px 24px rgba(0,0,0,.35);
  /* compatibility aliases: existing component classes pick up the new palette
     with no markup change while pages migrate to the Part 8 component set */
  --panel: var(--bg-raised); --panel2: var(--bg-inset);
  --dim: var(--text-dim); --accent: var(--amber); --accent2: var(--amber-hot);
  --good: var(--signal); --bad: var(--danger);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font-body); font-size: 15px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -.012em; }
/* the brand rule: every measurement renders in the mono face */
.card .big, table.bands, .slider-val, footer, .readout, .data { font-family: var(--font-mono); }
main { max-width: 960px; margin: 0 auto; padding: 0 20px 60px; }
a { color: var(--accent2); text-decoration: none; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 10px; }
h1 .sub { font-size: 16px; color: var(--dim); font-weight: 400; }
h2 { font-size: 18px; margin: 0 0 14px; }
h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .08em;
     color: var(--dim); margin: 14px 0 6px; }
small { color: var(--dim); }

header.top {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 10px 18px;
  max-width: 960px; margin: 0 auto; padding: 18px 20px;
}
.brand { color: var(--text); font-weight: 700; font-size: 18px;
  display: inline-flex; align-items: center; gap: 9px; white-space: nowrap; }
.brand-mark { flex: none; }
.brand em { color: var(--dim); font-style: normal; font-weight: 400;
  font-size: 11px; border: 1px solid var(--line);
  border-radius: 20px; padding: 2px 8px; }
header nav { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
header nav a { white-space: nowrap; }
header nav a:not(.badge) { color: var(--dim); font-size: 14px; }
header nav a:not(.badge):hover { color: var(--text); }
.nav-cta { padding: 6px 15px; font-size: 14px; }
.nav-cta:not(.badge) { color: #201409; }
.nav-cta:not(.badge):hover { color: #201409; }
.badge { border-radius: 20px; padding: 3px 12px; font-size: 12px; font-weight: 600; }
.badge.pro { background: var(--accent); color: #201409; }
.badge.free { border: 1px solid var(--line); color: var(--dim); }

.hero { text-align: center; padding: 40px 0 30px; }
.hero h1 { font-size: 38px; }
.hero p { color: var(--dim); max-width: 620px; margin: 0 auto; }

.panel { background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px; margin: 18px 0; }
.panel.center { text-align: center; padding: 60px 24px; }

.step { margin-bottom: 26px; }
.step .n { display: inline-flex; width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent); color: #201409; align-items: center;
  justify-content: center; font-size: 13px; margin-right: 8px; }

#dropzone { display: block; border: 2px dashed var(--line);
  border-radius: var(--radius); padding: 28px; text-align: center;
  cursor: pointer; transition: border-color .15s, background .15s; }
#dropzone:hover, #dropzone.drag { border-color: var(--accent); background: var(--panel2); }
#dropzone:focus-within { border-color: var(--accent2); }
#suno-dz { display: block; border: 2px dashed var(--line); border-radius: var(--radius);
  padding: 34px 24px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s; }
#suno-dz:hover, #suno-dz.drag { border-color: var(--accent); background: var(--panel2); }
.dz-file { font-weight: 600; }
.dz-file button { background: none; border: none; color: var(--dim); cursor: pointer; }

/* Visually-hidden but still focusable/operable by keyboard & screen readers.
   (display:none would remove these controls from the tab order entirely.) */
.vh, .genre input, .tabs input, #dropzone input, #suno-dz input {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap; border: 0;
}

.genre-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.genre span { display: block; padding: 9px 12px; border: 1px solid var(--line);
  border-radius: 8px; cursor: pointer; transition: all .12s; font-size: 14px; }
.genre span em { color: var(--accent); font-style: normal; }
.genre input:checked + span { border-color: var(--accent); background: var(--panel2);
  box-shadow: 0 0 0 1px var(--accent); }
/* keyboard focus indication for the custom-styled radio/checkbox/tab labels */
.genre input:focus-visible + span,
.tabs input:focus-visible + span,
#dropzone input:focus-visible + .dz-idle,
#suno-dz input:focus-visible + .dz-idle {
  outline: 2px solid var(--accent2); outline-offset: 2px;
}
:focus-visible { outline: 2px solid var(--accent2); outline-offset: 2px; }

.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 16px; }
.tabs.tabs3 { grid-template-columns: 1fr 1fr 1fr; }
.dim { color: var(--dim); }
.tabs span { display: block; padding: 12px 16px; border: 1px solid var(--line);
  border-radius: 8px; cursor: pointer; }
.tabs input:checked + span { border-color: var(--accent2);
  box-shadow: 0 0 0 1px var(--accent2); background: var(--panel2); }

#custom-panel { border-top: 1px solid var(--line); padding-top: 16px; }
.field { margin-bottom: 14px; }
.field .lbl { display: inline-block; min-width: 90px; font-weight: 600; font-size: 14px; }
.chips { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.chip { border: 1px solid var(--line); border-radius: 20px; padding: 4px 13px;
  font-size: 13px; cursor: pointer; background: none; color: var(--text); }
.chip.active, .chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.locked { opacity: .55; }
.chip em { font-style: normal; font-size: 10px; color: var(--accent); }
.lufs-row { display: flex; align-items: center; gap: 12px; margin-top: 10px; }
.lufs-row input[type=range] { flex: 1; }
.slider-field { display: flex; align-items: center; gap: 10px; }
.slider-field input[type=range] { flex: 1; accent-color: var(--accent); }
.slider-field small { min-width: 86px; }
.slider-field small:last-child { text-align: left; }
input[type=range] { accent-color: var(--accent); }

.submit-row { display: flex; align-items: center; gap: 16px;
  border-top: 1px solid var(--line); padding-top: 18px; flex-wrap: wrap; }
button, .button { background: var(--panel2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 22px;
  font-size: 15px; cursor: pointer; display: inline-block; }
#go, .button.primary { background: var(--accent); color: #201409;
  font-weight: 700; border: none; }
#go:hover, .button:hover { filter: brightness(1.1); }
.button.ghost { background: none; }
.button.locked { opacity: .6; }
.quota { color: var(--dim); font-size: 13px; }
.error { color: var(--bad); font-size: 14px; }

.history table { width: 100%; border-collapse: collapse; }
.history td { padding: 7px 10px; border-top: 1px solid var(--line); }
.history tr.head th { text-align: left; color: var(--dim); font-weight: 500;
  font-size: 12px; text-transform: uppercase; letter-spacing: .06em; padding: 0 10px 6px; }
.del { background: none; border: 1px solid var(--line); color: var(--dim);
  border-radius: 6px; padding: 2px 9px; font-size: 13px; cursor: pointer; line-height: 1.4; }
.del:hover { border-color: var(--bad); color: var(--bad); }
.del:disabled { opacity: .4; cursor: default; }
.history td.name { max-width: 380px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.status { font-size: 12px; padding: 2px 10px; border-radius: 20px; }
.status.done { background: rgba(104,196,124,.15); color: var(--good); }
.status.failed { background: rgba(224,108,108,.15); color: var(--bad); }
.status.processing, .status.queued { background: rgba(240,163,94,.15); color: var(--accent); }

.cred { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 26px; }
.cred div { background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; }
.cred p { color: var(--dim); font-size: 13px; margin: 6px 0 0; }

.spinner { display: inline-block; width: 18px; height: 18px; border: 3px solid var(--line);
  border-top-color: var(--accent); border-radius: 50%; animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.ab { margin: 18px 0; }
.ab-buttons { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.ab-toggle { display: flex; }
.ab-toggle .chip { border-radius: 0; }
.ab-toggle .chip:first-child { border-radius: 20px 0 0 20px; }
.ab-toggle .chip:last-child { border-radius: 0 20px 20px 0; }
.ab-toggle .chip.active { background: var(--accent); color: #201409; border-color: var(--accent); }
/* playback-sim toggle stays a single swipeable row on narrow screens */
#sim-toggle { max-width: 100%; overflow-x: auto; scrollbar-width: none; }
#sim-toggle::-webkit-scrollbar { display: none; }
#sim-toggle .sim { flex: none; white-space: nowrap; }
.demo-genres { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 12px; }
.demo-genre { cursor: pointer; }
.demo-genre.active { background: var(--accent); color: #201409; border-color: var(--accent); }
.demo-controls { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.dl-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

.metric-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.card { background: var(--panel2); border: 1px solid var(--line);
  border-radius: 10px; padding: 14px; }
.card.good { border-color: rgba(104,196,124,.5); }
.card .big { font-size: 26px; font-weight: 700; display: block; }
.card span:not(.big) { color: var(--dim); font-size: 13px; }
.card small { display: block; margin-top: 4px; }
.warnings p { color: var(--accent); font-size: 13px; margin: 4px 0; }

.spectrum { width: 100%; border-radius: 8px; border: 1px solid var(--line); }
table.bands { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 14px; }
table.bands th { text-align: left; color: var(--dim); font-weight: 500; }
table.bands td, table.bands th { padding: 5px 10px; border-top: 1px solid var(--line); }
td.pos { color: var(--good); } td.neg { color: var(--accent2); }

.recipe { padding-left: 18px; }
.recipe li { margin: 6px 0; }
.recipe em { color: var(--dim); }
.settings-used .chip { cursor: default; margin-right: 4px; }

.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.plan.featured { border-color: var(--accent); }
.plan .price { font-size: 34px; font-weight: 700; margin: 4px 0 12px; }
.plan .price span { font-size: 16px; color: var(--dim); font-weight: 400; }
.plan ul { padding-left: 18px; color: var(--dim); }
.plan li { margin: 6px 0; }
.plan .current { color: var(--good); font-weight: 600; }
.stripe-note { display: block; margin-top: 10px; }

footer { max-width: 960px; margin: 30px auto; padding: 0 20px;
  color: var(--dim); font-size: 12px; border-top: 1px solid var(--line); }

@media (max-width: 720px) {
  .cred, .plans { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
}

.progress-wrap { max-width: 520px; margin: 20px auto 0; }
.progress-bar { height: 10px; background: var(--panel2); border: 1px solid var(--line);
  border-radius: 6px; overflow: hidden; }
.progress-bar div { height: 100%; background: linear-gradient(90deg, var(--accent2), var(--accent));
  transition: width .5s cubic-bezier(.3,.7,.3,1); }
.progress-bar div.shimmer { position: relative; }
.progress-bar div.shimmer::after { content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.28), transparent);
  animation: shimmer 1.3s linear infinite; }
@keyframes shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }
.prog-line { margin-top: 10px; font-size: 15px; }

/* animated equalizer bars — a live "working" signal */
.eq-anim { display: flex; align-items: flex-end; justify-content: center;
  gap: 5px; height: 56px; margin: 26px auto 6px; }
.eq-anim span { width: 6px; border-radius: 3px; height: 30%;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent2) 100%);
  animation: eqbar 1.05s ease-in-out infinite; }
.eq-anim span:nth-child(1){animation-delay:-.9s} .eq-anim span:nth-child(2){animation-delay:-.2s}
.eq-anim span:nth-child(3){animation-delay:-.6s} .eq-anim span:nth-child(4){animation-delay:-.35s}
.eq-anim span:nth-child(5){animation-delay:-.8s} .eq-anim span:nth-child(6){animation-delay:-.1s}
.eq-anim span:nth-child(7){animation-delay:-.5s} .eq-anim span:nth-child(8){animation-delay:-.7s}
.eq-anim span:nth-child(9){animation-delay:-.3s}
@keyframes eqbar { 0%,100% { height: 22%; } 50% { height: 100%; } }
.eq-anim.stalled span { animation-play-state: paused; opacity: .4; }

.stages { max-width: 520px; margin: 22px auto 0; padding: 0; list-style: none;
  text-align: left; }
.stages li { position: relative; padding: 7px 8px 7px 30px; color: var(--dim);
  font-size: 14px; border-radius: 6px; transition: color .2s, background .2s; }
.stages li::before { content: ''; position: absolute; left: 8px; top: 50%;
  width: 12px; height: 12px; margin-top: -6px; border-radius: 50%;
  border: 1.5px solid var(--line); box-sizing: border-box; transition: all .2s; }
.stages li.done { color: var(--text); }
.stages li.done::before { content: '✓'; border-color: var(--good); background: var(--good);
  color: #08210f; font-size: 9px; font-weight: 700; text-align: center; line-height: 12px; }
.stages li.active { color: var(--text); background: var(--panel2); font-weight: 600; }
.stages li.active::before { border-color: var(--accent); background: transparent;
  animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(240,163,94,.5); }
  50% { box-shadow: 0 0 0 4px rgba(240,163,94,0); } }

@media (prefers-reduced-motion: reduce) {
  .eq-anim span, .progress-bar div.shimmer::after, .stages li.active::before { animation: none; }
}
.waveform { width: 100%; height: 120px; border-radius: 8px;
  border: 1px solid var(--line); display: block; cursor: pointer; }
#seek { width: 100%; margin: 6px 0 10px; }
.pro-tag { font-style: normal; font-size: 10px; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 8px; padding: 0 5px; }
.button small { display: block; font-size: 11px; color: inherit; opacity: .7; }

.hero-demo { display: inline-flex; align-items: center; gap: 14px;
  flex-wrap: wrap; justify-content: center; max-width: 100%;
  margin-top: 22px; padding: 14px 20px; }
.hero-demo p { margin: 0; }

.viz { width: 100%; height: 72px; display: block; border-radius: 8px 8px 0 0;
  background: #0a0c10; border: 1px solid var(--line); border-bottom: none; }

.wave-wrap { position: relative; }
.wave-wrap .waveform { border-radius: 0 0 8px 8px; border-top: none; }

.fb-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.fb-row .chip.active { background: var(--accent); color: #201409; }
.fb-up { color: #6fd08c; border-color: rgba(111,208,140,.4); }
.fb-up:hover, .fb-up.active { background: #6fd08c; border-color: #6fd08c; color: #06210f; }
.revise-row { display: flex; align-items: center; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.revise-row input { flex: 1; min-width: 260px; background: var(--panel2);
  border: 1px solid var(--line); border-radius: 8px; color: var(--text);
  padding: 9px 12px; font-size: 14px; }
details.eng { padding: 0; }
details.eng summary { cursor: pointer; padding: 18px 24px; list-style: none; }
details.eng summary h2 { display: inline; }
details.eng summary::before { content: '▸ '; color: var(--accent); }
details.eng[open] summary::before { content: '▾ '; }
details.eng .inner { padding: 6px 24px 20px; border-top: 1px solid var(--line); }
.badge-cert { display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--good); color: var(--good); border-radius: 8px;
  padding: 8px 14px; font-weight: 600; }
.hidden-step { display: none; }
@media (max-width: 720px) { .genre-grid { grid-template-columns: repeat(2, 1fr); } }

.term { border-bottom: 1px dotted var(--dim); cursor: help; }

.slider-val { min-width: 34px; text-align: right; font-variant-numeric: tabular-nums;
  color: var(--dim); font-size: 13px; }
.slider-val.nonzero { color: var(--accent); font-weight: 600; }

/* inline line-icon system (icons.html) */
.ic { vertical-align: -0.2em; flex: none; }
.button .ic { margin-right: 6px; }
.sim, .fb, #play-btn { display: inline-flex; align-items: center; gap: 5px; }
.ai-chip { display: inline-flex; align-items: center; gap: 7px; }
.ai-icon { display: inline-flex; color: var(--accent2); }

/* landing: explanatory hero copy, price strip, and FAQ */
.hero .lead { max-width: 680px; margin: 14px auto 0; }
.hero .price-line { max-width: 680px; margin: 18px auto 0; color: var(--text);
  background: var(--panel2); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 16px; font-size: 15px; }
.hero .price-line strong { color: var(--accent); }
.hero .price-line a { color: var(--accent2); text-decoration: none; }
.hero .price-line a:hover { text-decoration: underline; }
.price-note { color: var(--dim); font-size: 13px; margin: 6px 0 0; }
.faq { max-width: 760px; margin: 22px auto; }
.faq h2 { margin: 0 0 4px; }
.faq-item { padding: 14px 0; border-top: 1px solid var(--line); }
.faq-item:first-of-type { border-top: 0; }
.faq-item h3 { margin: 0 0 5px; font-size: 16px; color: var(--text); }
.faq-item p { margin: 0; color: var(--dim); }

/* legal pages: readable prose column */
.legal { max-width: 720px; margin: 0 auto; padding: 8px 0 24px; }
.legal h1 { font-size: 30px; }
.legal h2 { font-size: 18px; margin: 26px 0 6px; }
.legal p { color: var(--text); opacity: .9; }
.legal .dim { opacity: .6; }
.footer-links { margin-top: 10px; font-size: 13px; }
.footer-links a { color: var(--dim); }
.footer-links a:hover { color: var(--accent); }

/* wide report tables scroll inside their own box instead of the page (375px) */
.table-scroll { overflow-x: auto; max-width: 100%; }