:root {
  color-scheme: light dark;
  --bg: #0b0f17;
  --card: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.66);
  --accent: #7dd3fc;
  --danger: #fb7185;
  --ok: #34d399;

  --btn-border: rgba(255, 255, 255, 0.18);
  --btn-bg: rgba(125, 211, 252, 0.22);
  --btn-bg-hover: rgba(125, 211, 252, 0.32);
  --btn-bg-active: rgba(125, 211, 252, 0.28);
  --btn-shadow: 0 10px 26px rgba(0, 0, 0, 0.28);
  --btn-shadow-hover: 0 14px 36px rgba(0, 0, 0, 0.36);

  --btn-secondary-border: rgba(255, 255, 255, 0.22);
  --btn-secondary-bg: rgba(255, 255, 255, 0.12);
  --btn-secondary-bg-hover: rgba(255, 255, 255, 0.18);
  --btn-secondary-bg-active: rgba(255, 255, 255, 0.14);

  /* Toggle "ON" (Stop) state */
  --btn-on-border: rgba(251, 113, 133, 0.55);
  --btn-on-bg: rgba(251, 113, 133, 0.22);
  --btn-on-bg-hover: rgba(251, 113, 133, 0.32);
  --btn-on-bg-active: rgba(251, 113, 133, 0.28);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fb;
    --card: rgba(0, 0, 0, 0.03);
    --border: rgba(0, 0, 0, 0.12);
    --text: rgba(0, 0, 0, 0.92);
    --muted: rgba(0, 0, 0, 0.62);
    --accent: #0284c7;
    --danger: #e11d48;
    --ok: #059669;

    --btn-border: rgba(0, 0, 0, 0.14);
    --btn-bg: rgba(2, 132, 199, 0.16);
    --btn-bg-hover: rgba(2, 132, 199, 0.24);
    --btn-bg-active: rgba(2, 132, 199, 0.2);
    --btn-shadow: 0 10px 26px rgba(2, 8, 23, 0.14);
    --btn-shadow-hover: 0 14px 36px rgba(2, 8, 23, 0.18);

    --btn-secondary-border: rgba(0, 0, 0, 0.16);
    --btn-secondary-bg: rgba(2, 8, 23, 0.06);
    --btn-secondary-bg-hover: rgba(2, 8, 23, 0.1);
    --btn-secondary-bg-active: rgba(2, 8, 23, 0.08);

    --btn-on-border: rgba(225, 29, 72, 0.45);
    --btn-on-bg: rgba(225, 29, 72, 0.12);
    --btn-on-bg-hover: rgba(225, 29, 72, 0.18);
    --btn-on-bg-active: rgba(225, 29, 72, 0.15);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 10% -10%, rgba(125, 211, 252, 0.18), transparent),
    radial-gradient(900px 500px at 90% 0%, rgba(52, 211, 153, 0.14), transparent),
    radial-gradient(800px 600px at 50% 100%, rgba(251, 113, 133, 0.12), transparent), var(--bg);
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  color: var(--text);
}

.container {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.header {
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(6px);
}

h1 {
  margin: 0 0 6px;
  font-size: 22px;
  letter-spacing: 0.2px;
}

.subtitle {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 13px;
}

.badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
}

main {
  padding: 18px 0 34px;
}

.card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 14px;
  padding: 16px;
  margin: 14px 0;
  width: min(760px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 16px;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 12px;
}

.row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 10px 0;
}

.expected {
  margin: 0 0 10px;
}

button,
.linkbtn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  border: 1px solid var(--btn-border);
  background: linear-gradient(180deg, var(--btn-bg), rgba(255, 255, 255, 0.04));
  color: var(--text);
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.1;
  text-decoration: none;
  user-select: none;
  box-shadow: var(--btn-shadow);
  transition:
    transform 120ms ease,
    box-shadow 120ms ease,
    background-color 120ms ease,
    border-color 120ms ease,
    filter 120ms ease;
}

button.secondary,
.linkbtn.secondary {
  background: linear-gradient(180deg, var(--btn-secondary-bg), rgba(0, 0, 0, 0.02));
  border-color: var(--btn-secondary-border);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.26);
}

button:hover:not(:disabled),
.linkbtn:hover {
  transform: translateY(-1px);
  box-shadow: var(--btn-shadow-hover);
  filter: saturate(1.05);
  background: linear-gradient(180deg, var(--btn-bg-hover), rgba(255, 255, 255, 0.04));
}

button:active:not(:disabled),
.linkbtn:active {
  transform: translateY(0px);
  background: linear-gradient(180deg, var(--btn-bg-active), rgba(255, 255, 255, 0.04));
}

button.secondary:hover:not(:disabled),
.linkbtn.secondary:hover {
  background: linear-gradient(180deg, var(--btn-secondary-bg-hover), rgba(0, 0, 0, 0.02));
}

button.secondary:active:not(:disabled),
.linkbtn.secondary:active {
  background: linear-gradient(180deg, var(--btn-secondary-bg-active), rgba(0, 0, 0, 0.02));
}

button:focus-visible,
.linkbtn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Toggle button styling (uses aria-pressed state) */
button[aria-pressed="true"] {
  border-color: var(--btn-on-border);
  background: linear-gradient(180deg, var(--btn-on-bg), rgba(255, 255, 255, 0.04));
}

button[aria-pressed="true"]:hover:not(:disabled) {
  background: linear-gradient(180deg, var(--btn-on-bg-hover), rgba(255, 255, 255, 0.04));
}

button[aria-pressed="true"]:active:not(:disabled) {
  background: linear-gradient(180deg, var(--btn-on-bg-active), rgba(255, 255, 255, 0.04));
}

.preview {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
}

video {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.24);
}

.audio {
  width: 100%;
  margin-top: 8px;
}

.list {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
}

.mixed {
  min-height: 56px;
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 10px;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.log {
  margin: 10px 0 0;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
  overflow: auto;
  max-height: 320px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 12px;
  line-height: 1.35;
}

.footer {
  padding: 12px 0 22px;
  border-top: 1px solid var(--border);
}