:root {
  color-scheme: dark;
  --font-ui: "Source Sans 3", "Segoe UI", sans-serif;
  --ink: #edf5ff;
  --ink-strong: #f8fbff;
  --muted: #97abc5;
  --muted-strong: #c5d5e8;
  --bg-a: #050913;
  --bg-b: #09121d;
  --bg-c: #102239;
  --line: rgba(126, 155, 193, 0.22);
  --accent-rgb: 84 224 179;
  --radius: 20px;
  --radius-pill: 999px;
  --transition: 170ms ease;
  --warning: #ffcf7b;
  --success: #90f0c7;
  --danger: #ffb6ac;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 15%, rgb(var(--accent-rgb) / 0.15) 0%, transparent 30%),
    radial-gradient(circle at 85% 10%, rgba(102, 142, 214, 0.13) 0%, transparent 28%),
    linear-gradient(155deg, var(--bg-a) 0%, var(--bg-b) 42%, var(--bg-c) 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select,
a {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
}

img,
audio {
  display: block;
  width: 100%;
}

.studio {
  width: min(660px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3.5rem 0 5rem;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.app-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.25rem;
}

.app-heading h1 {
  margin: 0;
  font-family: "Silkscreen", monospace;
  font-size: clamp(1.25rem, 3.2vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
  color: var(--ink-strong);
  text-shadow: 0 3px 0 rgba(0, 0, 0, 0.4);
}

.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 200px;
  padding: 2.5rem 2rem;
  border: 1.5px dashed rgb(var(--accent-rgb) / 0.38);
  border-radius: var(--radius);
  background: linear-gradient(
    155deg,
    rgb(var(--accent-rgb) / 0.07) 0%,
    rgba(255, 255, 255, 0.02) 100%
  );
  cursor: pointer;
  text-align: center;
  transition:
    border-color var(--transition),
    background var(--transition),
    transform var(--transition);
}

.dropzone:hover,
.dropzone.is-dragging {
  border-color: rgb(var(--accent-rgb) / 0.68);
  background: linear-gradient(
    155deg,
    rgb(var(--accent-rgb) / 0.12) 0%,
    rgba(255, 255, 255, 0.03) 100%
  );
  transform: translateY(-2px);
}

.dropzone-icon {
  width: 2.4rem;
  height: 2.4rem;
  color: rgb(var(--accent-rgb) / 0.65);
}

.dropzone-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink-strong);
  letter-spacing: -0.01em;
}

.dropzone-hint {
  color: var(--muted);
  font-size: 0.88rem;
}

.workspace {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.workspace[hidden] {
  display: none;
}

.file-row {
  display: flex;
}

.file-pill {
  display: inline-flex;
  align-items: center;
  min-height: 2.7rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(8, 16, 26, 0.72);
  color: var(--muted-strong);
  font-size: 0.88rem;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.action-row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
  flex-wrap: wrap;
}

.control {
  display: grid;
  gap: 0.4rem;
  flex: 1;
  min-width: 140px;
}

.control span {
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.control select,
.control input[type="number"] {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid rgba(140, 170, 206, 0.2);
  border-radius: 14px;
  background: rgba(8, 16, 26, 0.78);
  color: var(--ink);
  appearance: auto;
}

.primary-button,
.download-link,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.7rem 1.4rem;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  white-space: nowrap;
  transition:
    transform var(--transition),
    opacity var(--transition),
    box-shadow var(--transition);
}

.primary-button {
  border: none;
  background: linear-gradient(
    135deg,
    rgb(var(--accent-rgb) / 0.92),
    rgb(var(--accent-rgb) / 0.65)
  );
  color: #04111c;
  box-shadow: 0 8px 24px rgb(var(--accent-rgb) / 0.18);
}

.download-link {
  border: 1px solid rgb(var(--accent-rgb) / 0.3);
  background: rgb(var(--accent-rgb) / 0.1);
  color: rgb(var(--accent-rgb));
}

.ghost-button {
  border: 1px solid rgba(140, 170, 206, 0.2);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
}

.primary-button:hover,
.download-link:hover,
.ghost-button:hover {
  transform: translateY(-1px);
}

.primary-button:disabled,
.ghost-button:disabled {
  opacity: 0.48;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

[hidden] {
  display: none !important;
}

.settings-group {
  border: 1px solid rgba(140, 170, 206, 0.16);
  border-radius: var(--radius);
  background: rgba(8, 16, 26, 0.55);
}

.settings-group[open] {
  border-color: rgb(var(--accent-rgb) / 0.24);
}

.settings-group summary {
  padding: 0.85rem 1rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-strong);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.settings-group summary::-webkit-details-marker {
  display: none;
}

.settings-group summary::after {
  content: "+";
  color: rgb(var(--accent-rgb));
  font-size: 1.2rem;
  line-height: 1;
}

.settings-group[open] summary::after {
  content: "−";
}

.settings-content {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.85rem;
  padding: 0 1rem 1rem;
}

.settings-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0 1rem 1rem;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.7rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid rgba(140, 170, 206, 0.16);
  border-radius: 12px;
  background: rgba(8, 16, 26, 0.7);
  color: var(--muted-strong);
  font-size: 0.9rem;
  cursor: pointer;
}

.toggle input {
  accent-color: rgb(var(--accent-rgb));
}

.range-control {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.6rem;
  min-height: 3rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid rgba(140, 170, 206, 0.2);
  border-radius: 14px;
  background: rgba(8, 16, 26, 0.78);
}

.range-control input[type="range"] {
  width: 100%;
  accent-color: rgb(var(--accent-rgb));
}

.range-control strong {
  font-size: 0.85rem;
  color: rgb(var(--accent-rgb));
  min-width: 3rem;
  text-align: right;
}

.preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.preview-card {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 18, 30, 0.65);
}

.preview-label {
  margin: 0 0 0.65rem;
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgb(var(--accent-rgb));
}

.preview-card img {
  border-radius: 12px;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.03);
}

.preview-card audio {
  border-radius: 10px;
}

.preview-empty {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 2.6rem;
  padding: 0.55rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(8, 16, 26, 0.65);
  color: var(--muted-strong);
  font-size: 0.9rem;
}

.status[data-tone="info"] {
  border-color: rgb(var(--accent-rgb) / 0.24);
  color: var(--ink-strong);
  background: rgb(var(--accent-rgb) / 0.08);
}

.status[data-tone="success"] {
  border-color: rgba(144, 240, 199, 0.28);
  color: var(--success);
  background: rgba(144, 240, 199, 0.08);
}

.status[data-tone="warning"] {
  border-color: rgba(255, 207, 123, 0.28);
  color: var(--warning);
  background: rgba(255, 207, 123, 0.08);
}

.status[data-tone="danger"] {
  border-color: rgba(255, 182, 172, 0.28);
  color: var(--danger);
  background: rgba(255, 182, 172, 0.08);
}

:is(
    .primary-button,
    .download-link,
    .ghost-button,
    .control select,
    .control input,
    .settings-group summary
  ):focus-visible,
.dropzone:focus-within,
.toggle:focus-within {
  outline: none;
  box-shadow: 0 0 0 3px rgb(var(--accent-rgb) / 0.28);
}

@media (max-width: 580px) {
  .preview-grid {
    grid-template-columns: 1fr;
  }

  .action-row {
    flex-direction: column;
    align-items: stretch;
  }

  .settings-content {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}