/* Stem splitter — same chassis language as Key · BPM */

.split-body {
  background: #000;
  min-height: 100vh;
  min-height: 100svh;
}

.split-body::before {
  opacity: 0.18;
}

.split-page {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: var(--space-5) var(--space-5) var(--space-6);
  background:
    radial-gradient(ellipse 70% 40% at 50% 0%, rgba(255, 255, 255, 0.035) 0%, transparent 55%),
    var(--ink);
}

.split-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(720px, 100%);
  margin: 0 auto 36px;
  gap: 12px;
  min-width: 0;
}

.split-nav .nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px;
  min-width: 0;
}

.split-nav .logo-word {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  opacity: 0.92;
}

.split-nav .nav-links a {
  color: #9a9a9a;
}

.split-nav .nav-links a[aria-current="page"] {
  color: #f4f4f4;
  background: rgba(255, 255, 255, 0.06);
}

.split-main {
  width: min(720px, 100%);
  margin: 0 auto;
  display: grid;
  gap: var(--space-4);
  flex: 1;
  align-content: start;
  padding-top: clamp(0px, 4vh, 48px);
}

.split-head {
  text-align: center;
  margin-bottom: var(--space-2);
}

.split-head h1 {
  margin: 0 0 10px;
  font-family: var(--font-brand);
  font-size: clamp(1.75rem, 4vw, 2.15rem);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-display);
  color: var(--brand);
  line-height: var(--leading-tight);
}

.split-head p {
  margin: 0;
  font-family: var(--font-ui);
  font-size: var(--text-md);
  color: var(--silkscreen);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
}

.split-gpu {
  margin: 10px 0 0;
  font-size: 0.82rem;
  color: rgba(255, 200, 120, 0.9);
}

.split-drop {
  display: grid;
  place-items: center;
  gap: 6px;
  min-height: 132px;
  padding: 28px 20px;
  border: 1px solid var(--panel-edge-strong);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.025);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.2s ease, background 0.2s ease;
  position: relative;
  overflow: hidden;
}

.split-drop.is-drag {
  border-color: rgba(110, 196, 180, 0.45);
  background: rgba(110, 196, 180, 0.08);
}

.split-alive {
  display: none;
  align-items: center;
  justify-content: center;
  width: auto;
  min-height: 0;
  margin: 0 auto 10px;
  overflow: visible;
  color: var(--teal, #6ec4b4);
}

.split-drop.is-busy .split-alive {
  display: grid;
}

.split-drop.is-busy .split-alive.logo-hero--cycle,
.split-drop.is-busy .split-alive.logo-hero {
  --mark-w: min(168px, 62vw);
  color: var(--teal, #6ec4b4);
}

.split-drop.is-busy {
  border-style: solid;
  border-color: var(--teal-soft, rgba(110, 196, 180, 0.32));
  background: var(--teal-wash, rgba(110, 196, 180, 0.1));
  pointer-events: none;
  cursor: default;
  overflow: visible;
}

.split-drop:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-color: rgba(255, 255, 255, 0.35);
}

.split-drop-title {
  font-weight: 600;
  color: #f2f2f2;
}

.split-drop-sub {
  font-size: 0.9rem;
  color: var(--silkscreen);
}

.split-status {
  margin: 0;
  text-align: center;
  font-size: 0.92rem;
  color: var(--readout, #c8fff0);
}

.split-status.is-error {
  color: #ff9b9b;
}

.split-results {
  display: grid;
  gap: 18px;
}

.split-results-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.split-results-head h2 {
  margin: 0;
  font-family: var(--font-brand);
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.split-source {
  margin: 0;
  font-size: 0.88rem;
  color: var(--silkscreen);
}

.split-tracks {
  display: grid;
  gap: 12px;
}

.split-track {
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  content-visibility: auto;
  contain-intrinsic-size: auto 120px;
}

.split-track-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.split-track-head h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: capitalize;
}

.split-track-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.split-play {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 6px 12px;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  color: #f2f2f2;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.split-play:hover {
  background: rgba(255, 255, 255, 0.11);
  border-color: rgba(255, 255, 255, 0.28);
}

.split-play.is-playing {
  background: rgba(110, 196, 180, 0.16);
  border-color: rgba(110, 196, 180, 0.4);
  color: #dff7f1;
}

.split-play-icon {
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 5px 0 5px 8px;
  border-color: transparent transparent transparent currentColor;
  margin-left: 1px;
}

.split-play.is-playing .split-play-icon {
  width: 9px;
  height: 9px;
  margin-left: 0;
  border: none;
  background:
    linear-gradient(currentColor, currentColor) left / 2.5px 100% no-repeat,
    linear-gradient(currentColor, currentColor) right / 2.5px 100% no-repeat;
}

.split-wave-btn {
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
  border-radius: 4px;
  overflow: hidden;
}

.split-wave-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.split-wave {
  display: block;
  width: 100%;
  height: 56px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.35);
}

.split-wave-progress {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: rgba(110, 196, 180, 0.18);
  pointer-events: none;
}

.split-studio {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  padding-top: 4px;
}

.split-note {
  margin: 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.45;
}

.split-note a {
  color: rgba(110, 196, 180, 0.95);
}

.split-seo {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--silkscreen);
  font-size: 0.92rem;
  line-height: 1.55;
}

.split-seo h2 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  color: #e8e8e8;
}

.split-seo p {
  margin: 0 0 12px;
}

.split-faq details {
  margin-bottom: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-btn);
  padding: 10px 12px;
}

.split-faq summary {
  cursor: pointer;
  font-weight: 600;
  color: #eaeaea;
}

.split-faq p {
  margin: 8px 0 0;
}

@media (prefers-reduced-motion: reduce) {
  .split-drop,
  .split-drop.is-busy {
    transition: none;
  }
}