/* ── Download page ────────────────────────────────────── */

/* Navigation in header */
.site-nav {
  display: flex;
  gap: 1rem;
  margin-top: .6rem;
}
.site-nav a {
  color: rgba(255,255,255,.75);
  text-decoration: none;
  font-size: .85rem;
  font-weight: 600;
  padding: .2rem .5rem;
  border-radius: 4px;
  transition: background .15s, color .15s;
}
.site-nav a:hover,
.site-nav a.active {
  color: #fff;
  background: rgba(255,255,255,.18);
}

/* Section card */
.dl-card {
  padding: 1.2rem 1.4rem;
}
.dl-section-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: .85rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--border);
}

/* Date row */
.dl-date-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1.2rem;
}
.dl-date-row label {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  font-size: .8rem;
  font-weight: 600;
  color: var(--muted);
}
.dl-date-row input[type="date"] {
  padding: .4rem .6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .88rem;
  color: var(--text);
  background: #fff;
  outline: none;
  transition: border-color .15s;
}
.dl-date-row input[type="date"]:focus {
  border-color: var(--accent2);
}
.dl-date-presets {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
}
.preset-btn {
  padding: .35rem .7rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: #fff;
  font-size: .8rem;
  color: var(--accent);
  cursor: pointer;
  font-weight: 600;
  transition: background .12s, border-color .12s;
}
.preset-btn:hover,
.preset-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Instrument groups */
.dl-hint {
  font-size: .82rem;
  color: var(--muted);
  margin-bottom: 1rem;
}
.dl-group {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: .65rem;
  overflow: hidden;
}
.dl-group-header {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .65rem .9rem;
  background: #f5f8fa;
  cursor: pointer;
  user-select: none;
}
.dl-group-header:hover { background: #ecf2f7; }
.dl-group-header input[type="checkbox"] {
  width: 15px; height: 15px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}
.dl-group-label {
  font-weight: 700;
  font-size: .88rem;
  flex: 1;
}
.dl-group-count {
  font-size: .78rem;
  color: var(--muted);
}
.dl-expand-btn {
  font-size: .75rem;
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 .2rem;
  transition: transform .2s;
}
.dl-expand-btn.open { transform: rotate(180deg); }

.dl-instruments {
  display: none;
  padding: .6rem .9rem .75rem 2.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: .35rem .8rem;
}
.dl-instruments.collapsed { display: none; }

.dl-instr-item {
  display: flex;
  align-items: center;
  gap: .45rem;
  font-size: .82rem;
  color: var(--text);
}
.dl-instr-item input[type="checkbox"] {
  width: 13px; height: 13px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}
.dl-instr-tag {
  font-size: .62rem;
  font-weight: 700;
  padding: .08rem .3rem;
  border-radius: 3px;
}

/* Actions section */
.dl-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}
.dl-summary {
  flex: 1;
  font-size: .85rem;
  color: var(--muted);
  min-width: 200px;
}
.dl-btn {
  padding: .65rem 1.8rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .15s, opacity .15s;
}
.dl-btn:hover:not(:disabled) { background: var(--accent2); }
.dl-btn:disabled { opacity: .45; cursor: not-allowed; }

.dl-progress {
  width: 100%;
  font-size: .82rem;
  color: var(--muted);
}
.dl-progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin-top: .4rem;
  overflow: hidden;
}
.dl-progress-bar-fill {
  height: 100%;
  background: var(--accent2);
  border-radius: 2px;
  transition: width .2s;
}