/* Stem Separator: working screen, the stem mixer, downloads. */
.ss-note { display: flex; align-items: center; justify-content: center; gap: .45rem; margin: .9rem auto 0; max-width: 60ch; color: var(--text-soft); font-size: .88rem; text-align: center; }
.ss-note .icon { width: 15px; height: 15px; flex: none; }

/* working */
.ss-work { max-width: 560px; margin-inline: auto; padding-block: 2rem; }
.ss-work .progress-wrap { width: 100%; }
.ss-hint { font-size: .88rem; margin: 0; }
.ss-spinner { display: flex; align-items: center; justify-content: center; gap: 6px; height: 54px; }
.ss-spinner span { width: 9px; height: 18px; border-radius: 9px; background: var(--c, #e8457c); animation: ss-eq 1s ease-in-out infinite; }
.ss-spinner span:nth-child(2) { --c: #f59e0b; animation-delay: -.25s; }
.ss-spinner span:nth-child(3) { --c: #3b82f6; animation-delay: -.5s; }
.ss-spinner span:nth-child(4) { --c: #10b981; animation-delay: -.75s; }
@keyframes ss-eq { 0%, 100% { height: 14px; } 50% { height: 50px; } }
@media (prefers-reduced-motion: reduce) { .ss-spinner span { animation: none; height: 30px; } }

/* mixer */
.ss-mixer { padding: 1rem 1.1rem 1.1rem; }
.ss-head { display: flex; align-items: center; gap: .9rem; margin-bottom: .9rem; }
.ss-play { flex: none; display: grid; place-items: center; width: 52px; height: 52px; border: 0; border-radius: 50%; background: var(--primary); color: #fff; cursor: pointer; box-shadow: var(--shadow-sm); transition: transform .15s var(--ease-spring), filter .15s; }
.ss-play:hover { filter: brightness(1.1); }
.ss-play:active { transform: scale(.94); }
.ss-play .icon { width: 24px; height: 24px; }
.ss-head-text { flex: 1; min-width: 0; }
.ss-title { margin: 0; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ss-time { margin: 0; font-size: .88rem; font-variant-numeric: tabular-nums; }
.ss-stems { display: grid; gap: .5rem; }
.ss-stem { display: grid; grid-template-columns: auto auto minmax(110px, 160px) minmax(0, 1fr) auto; align-items: center; gap: .7rem; padding: .55rem .7rem; border: 1px solid var(--border); border-radius: var(--radius); background: color-mix(in srgb, var(--c) 5%, var(--surface)); transition: opacity .2s; }
.ss-stem.is-silent .ss-wave, .ss-stem.is-silent .ss-icon { opacity: .35; }
.ss-pick input { width: 18px; height: 18px; accent-color: var(--c); cursor: pointer; }
.ss-icon { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; background: color-mix(in srgb, var(--c) 16%, transparent); color: var(--c); }
.ss-icon .icon { width: 20px; height: 20px; }
.ss-name { display: flex; flex-direction: column; min-width: 0; line-height: 1.25; }
.ss-name small { color: var(--text-soft); font-size: .76rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ss-wave { position: relative; height: 44px; cursor: pointer; border-radius: 6px; overflow: hidden; }
.ss-wave canvas { position: absolute; left: 0; top: 0; max-width: none; } /* the played part is the same drawing, cut off — never squeezed */
.ss-wave-done { position: absolute; inset: 0 auto 0 0; width: 0; overflow: hidden; border-right: 2px solid var(--c); }
.ss-ctrls { display: flex; align-items: center; gap: .35rem; }
.ss-ctrls input[type="range"] { width: 92px; }
.ss-tog { width: 30px; height: 30px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text-soft); font: 700 .78rem var(--font-sans); cursor: pointer; }
.ss-tog:hover { color: var(--text); border-color: var(--border-strong); }
.ss-tog[data-solo].is-on { background: #f59e0b; border-color: #f59e0b; color: #fff; }
.ss-mute { display: grid; place-items: center; padding: 0; }
.ss-mute .icon { width: 16px; height: 16px; }
.ss-tog[data-mute].is-on { background: var(--text-soft); border-color: var(--text-soft); color: var(--surface); }
.ss-dl { display: grid; place-items: center; width: 34px; height: 34px; border: 0; border-radius: 8px; background: color-mix(in srgb, var(--c) 14%, transparent); color: var(--c); cursor: pointer; }
.ss-dl:hover { background: var(--c); color: #fff; }
.ss-dl .icon { width: 17px; height: 17px; }

/* downloads */
.ss-export { margin-top: 1rem; display: grid; gap: 1rem; }
.ss-export-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.ss-export-head h2 { margin: 0; font-size: 1.1rem; }
.ss-format { display: flex; align-items: center; gap: .5rem; font-size: .9rem; color: var(--text-soft); }
.ss-format .select { width: auto; min-width: 9rem; }
.ss-quick { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .6rem; }
.ss-quick-btn { display: flex; align-items: center; gap: .75rem; padding: .8rem .9rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); text-align: left; font: inherit; cursor: pointer; transition: border-color .15s, background .15s, transform .15s var(--ease-spring); }
.ss-quick-btn:hover { border-color: var(--primary); background: var(--primary-softer); }
.ss-quick-btn:active { transform: scale(.98); }
.ss-quick-btn:disabled { opacity: .55; cursor: default; }
.ss-quick-btn .icon { width: 24px; height: 24px; color: var(--primary); flex: none; }
.ss-quick-btn span { display: flex; flex-direction: column; min-width: 0; }
.ss-quick-btn small { color: var(--text-soft); font-size: .8rem; }
.ss-picked { padding-top: .9rem; border-top: 1px solid var(--border); }
.ss-picked-label { margin: 0 0 .6rem; }
.ss-picked-actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.ss-small { font-size: .82rem; margin: .5rem 0 0; }
[data-view="result"] > .center { margin-top: 1rem; }

@media (max-width: 760px) {
  .ss-stem { grid-template-columns: auto auto minmax(0, 1fr) auto; grid-template-areas: "pick icon name dl" "wave wave wave wave" "ctrls ctrls ctrls ctrls"; row-gap: .5rem; }
  .ss-pick { grid-area: pick; } .ss-icon { grid-area: icon; } .ss-name { grid-area: name; } .ss-wave { grid-area: wave; }
  .ss-ctrls { grid-area: ctrls; display: contents; }
  .ss-ctrls > .ss-dl { grid-area: dl; }
  .ss-ctrls > .ss-tog, .ss-ctrls > input { grid-row: 3; }
  .ss-ctrls > [data-solo] { grid-column: 1; } .ss-ctrls > [data-mute] { grid-column: 2; } .ss-ctrls > input { grid-column: 3 / 5; width: 100%; }
  .ss-quick { grid-template-columns: 1fr; }
}