:root {
  --bg: #0f1419;
  --panel: #1a2129;
  --panel-2: #222b35;
  --text: #e7edf3;
  --muted: #93a1b0;
  --accent: #25d366; /* WhatsApp green */
  --accent-dim: #1c9c4d;
  --error: #ff6b6b;
  --border: #2c3845;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header { text-align: center; margin-bottom: 28px; }
h1 { margin: 0 0 6px; font-size: 1.8rem; }
.sub { margin: 0; color: var(--muted); }
code {
  background: var(--panel-2);
  padding: 1px 6px;
  border-radius: 5px;
  font-size: 0.9em;
}

/* Dropzone */
#dropzone {
  border: 2px dashed var(--border);
  border-radius: 16px;
  background: var(--panel);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .05s;
  outline: none;
}
#dropzone:hover, #dropzone:focus-visible { border-color: var(--accent-dim); }
#dropzone.dragging {
  border-color: var(--accent);
  background: #16241c;
  transform: scale(1.01);
}
.dz-icon { font-size: 2.4rem; }
.dz-title { font-size: 1.15rem; font-weight: 600; margin: 8px 0 4px; }
.dz-hint { color: var(--muted); margin: 0; font-size: .9rem; }

/* Results */
#results { margin-top: 24px; display: flex; flex-direction: column; gap: 14px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  border-left: 4px solid var(--border);
}
.card.pending { border-left-color: var(--muted); }
.card.done { border-left-color: var(--accent); }
.card.error { border-left-color: var(--error); }

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.filename {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.status {
  flex-shrink: 0;
  font-size: .8rem;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card.done .status { color: var(--accent); }
.card.error .status { color: var(--error); }

.block {
  border-top: 1px solid var(--border);
  padding-top: 10px;
  margin-top: 10px;
}
.block:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.block-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
}
.block-label {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
}
.block-en .block-label { color: var(--accent); }

.transcript { margin: 0; white-space: pre-wrap; }
.err { margin: 0; color: var(--error); }

.copy-btn {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: .85rem;
}
.copy-btn:hover { border-color: var(--accent-dim); }

/* Spinner */
.spinner {
  width: 13px;
  height: 13px;
  border: 2px solid var(--muted);
  border-top-color: transparent;
  border-radius: 50%;
  display: inline-block;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

footer { margin-top: 40px; text-align: center; }
footer p { color: var(--muted); font-size: .8rem; margin: 0; }