:root {
  --bg-a: #061422;
  --bg-b: #0e2436;
  --line: rgba(255, 255, 255, 0.2);
  --panel: rgba(8, 20, 34, 0.85);
  --text: #f4f8ff;
  --muted: #9fb1c2;
  --accent: #ff6b00;
  --accent-soft: #ffb067;
  --mint: #31ddca;
  --danger: #ff4f61;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
  background:
    radial-gradient(circle at 20% 10%, rgba(49, 221, 202, 0.22) 0, transparent 36%),
    radial-gradient(circle at 90% 0%, rgba(255, 107, 0, 0.22) 0, transparent 42%),
    linear-gradient(160deg, var(--bg-a) 0%, var(--bg-b) 70%);
}

.app {
  width: min(1120px, 94vw);
  margin: 0 auto;
  padding: 20px 0 36px;
}

.hero {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
}

.home {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
}

.title-wrap h1 {
  margin: 2px 0;
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(2rem, 5vw, 3.8rem);
  letter-spacing: 0.06em;
}

.eyebrow {
  margin: 0;
  color: var(--accent-soft);
  letter-spacing: 0.18em;
  font-size: 0.78rem;
}

.lead {
  margin: 0;
  color: var(--muted);
}

.live-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 600;
  white-space: nowrap;
}

.live-chip.live {
  border-color: rgba(49, 221, 202, 0.7);
  color: var(--mint);
}

.live-chip.alert {
  border-color: rgba(255, 79, 97, 0.7);
  color: #ffd6dc;
}

.live-chip.warn {
  border-color: rgba(255, 176, 103, 0.8);
  color: #ffd9b0;
}

.board {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr;
  gap: 12px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px;
  backdrop-filter: blur(4px);
}

.card h2 {
  margin: 0 0 10px;
  font-family: "Bebas Neue", sans-serif;
  letter-spacing: 0.06em;
  font-size: 1.6rem;
}

.status-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.status-grid .k {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
}

.status-grid .v {
  display: block;
  font-weight: 600;
  margin-top: 2px;
  word-break: break-word;
}

.status-error {
  color: #ffd6dc;
  min-height: 1.2em;
}

.diag-grid {
  margin-top: 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.progress-wrap {
  margin: 10px 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.03);
}

.progress-times {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.82rem;
}

.progress-rail {
  position: relative;
  margin-top: 4px;
}

#progress {
  width: 100%;
}

#progress:disabled {
  opacity: 1;
}

.switch-marker {
  position: absolute;
  top: -1px;
  bottom: -1px;
  width: 2px;
  left: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(49, 221, 202, 1), rgba(255, 176, 103, 1));
  box-shadow: 0 0 0 1px rgba(6, 20, 34, 0.95);
}

.switch-marker.hidden {
  display: none;
}

.switch-hint {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.82rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

button {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  padding: 8px 12px;
  transition: transform 120ms ease, border-color 160ms ease, box-shadow 160ms ease, background 160ms ease, opacity 160ms ease;
}

button:hover {
  border-color: rgba(49, 221, 202, 0.7);
}

button.danger {
  border-color: rgba(255, 79, 97, 0.7);
  background: rgba(255, 79, 97, 0.12);
}

button.btn-pop {
  animation: btnPop 0.28s ease-out;
}

button.btn-wait {
  border-color: rgba(49, 221, 202, 0.92);
  box-shadow: 0 0 0 1px rgba(49, 221, 202, 0.4) inset, 0 0 18px rgba(49, 221, 202, 0.22);
  padding-right: 34px;
}

button.btn-wait::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(241, 249, 255, 0.95);
  border-top-color: transparent;
  transform: translateY(-50%);
  animation: btnSpin 0.68s linear infinite;
}

button:disabled {
  opacity: 0.78;
  cursor: wait;
}

@keyframes btnPop {
  0% {
    transform: scale(1);
  }
  42% {
    transform: scale(0.94);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes btnSpin {
  0% {
    transform: translateY(-50%) rotate(0deg);
  }
  100% {
    transform: translateY(-50%) rotate(360deg);
  }
}

.slider-wrap {
  display: grid;
  gap: 6px;
}

.slider-wrap input[type="range"] {
  width: 100%;
}

.hint {
  color: var(--muted);
  margin: 8px 0 0;
}

.upload-box {
  border: 1px dashed rgba(49, 221, 202, 0.6);
  border-radius: 14px;
  padding: 14px;
  text-align: center;
}

.upload-box.dragging {
  border-color: var(--accent);
  background: rgba(255, 107, 0, 0.1);
}

.queue-card {
  margin-top: 12px;
}

.queue-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.track-list {
  list-style: decimal;
  margin: 8px 0 0;
  padding-left: 22px;
  display: grid;
  gap: 8px;
}

.track-row {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.02);
}

.track-row.active {
  border-color: rgba(49, 221, 202, 0.7);
  box-shadow: 0 0 0 1px rgba(49, 221, 202, 0.25) inset;
}

.track-main {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.track-pick {
  min-width: 0;
  cursor: pointer;
  border-radius: 8px;
  padding: 2px 4px;
  transition: background 120ms ease, box-shadow 120ms ease;
}

.track-pick:hover {
  background: rgba(49, 221, 202, 0.1);
}

.track-pick:focus-visible {
  outline: none;
  background: rgba(49, 221, 202, 0.12);
  box-shadow: 0 0 0 1px rgba(49, 221, 202, 0.8) inset;
}

.track-name {
  font-weight: 600;
  word-break: break-all;
}

.track-meta {
  color: var(--muted);
  font-size: 0.8rem;
}

.track-actions {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

#preview-player {
  width: 100%;
  margin-top: 12px;
}

.control-message {
  margin: 10px 2px 0;
  color: var(--accent-soft);
  min-height: 1.2em;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .board {
    grid-template-columns: 1fr;
  }

  .status-grid {
    grid-template-columns: 1fr;
  }

  .diag-grid {
    grid-template-columns: 1fr;
  }
}