:root {
  color-scheme: dark;
  --bg: #10100f;
  --panel: #1b1a18;
  --panel-strong: #23211f;
  --text: #f4f0e8;
  --muted: #aaa49a;
  --line: #38342f;
  --accent: #3ddc97;
  --accent-strong: #2fbd80;
  --warning: #f2c14e;
  --error: #ff6b6b;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(61, 220, 151, 0.14), transparent 34rem),
    linear-gradient(135deg, #10100f 0%, #171614 54%, #0c0c0b 100%);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 28px;
}

.converter-card {
  width: min(760px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: rgba(27, 26, 24, 0.94);
  box-shadow: var(--shadow);
  padding: clamp(22px, 4vw, 38px);
}

.header {
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0;
}

.form {
  display: grid;
  gap: 18px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 650;
}

input,
select,
button {
  width: 100%;
  border-radius: 8px;
  font: inherit;
}

input,
select {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--text);
  min-height: 50px;
  padding: 0 14px;
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(61, 220, 151, 0.16);
}

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

button,
.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  border: 0;
  background: var(--accent);
  color: #09110d;
  cursor: pointer;
  font-weight: 800;
  text-decoration: none;
  transition:
    transform 160ms ease,
    background 160ms ease,
    opacity 160ms ease;
}

button:hover,
.download-button:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

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

.metadata {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 16px;
  align-items: center;
  margin-top: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(35, 33, 31, 0.72);
  padding: 12px;
}

.metadata img {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 6px;
  object-fit: cover;
  background: #0c0c0b;
}

.metadata h2 {
  margin-bottom: 8px;
  font-size: 1rem;
  line-height: 1.35;
}

.metadata p {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.92rem;
}

.status-panel {
  margin-top: 22px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.status-line {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 28px;
  color: var(--muted);
}

.status-dot {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--muted);
}

.status-dot.active {
  background: var(--warning);
  box-shadow: 0 0 0 6px rgba(242, 193, 78, 0.13);
}

.status-dot.done {
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(61, 220, 151, 0.13);
}

.status-dot.error {
  background: var(--error);
  box-shadow: 0 0 0 6px rgba(255, 107, 107, 0.13);
}

.error-text {
  margin: 10px 0 0;
  color: var(--error);
}

.download-button {
  margin-top: 16px;
  width: 100%;
  border-radius: 8px;
}

.hidden {
  display: none !important;
}

@media (max-width: 640px) {
  .shell {
    padding: 16px;
    place-items: start center;
  }

  .converter-card {
    margin-top: 18px;
  }

  .controls,
  .metadata {
    grid-template-columns: 1fr;
  }
}