/* ── Studio layout ─────────────────────────────────────────────── */

.studio-layout {
  display: grid;
  grid-template-columns: 200px 1fr 240px;
  gap: 1rem;
  padding: 1rem;
  min-height: calc(100vh - 120px);
  align-items: start;
}

/* ── Palette ────────────────────────────────────────────────────── */

.palette {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  position: sticky;
  top: 1rem;
}

.palette-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.palette-card {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.75rem;
  margin-bottom: 0.4rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: grab;
  font-size: 0.9rem;
  user-select: none;
  transition: border-color 0.15s, background 0.15s;
}

.palette-card:hover:not(.locked) {
  border-color: var(--accent);
  background: #1a2030;
}

.palette-card.locked {
  opacity: 0.5;
  cursor: pointer;
}

.palette-icon {
  font-size: 1rem;
  line-height: 1;
}

.lock-icon {
  margin-left: auto;
  font-size: 0.8rem;
  opacity: 0.7;
}

.palette-hint {
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 0.75rem;
  line-height: 1.4;
}

/* ── Canvas ─────────────────────────────────────────────────────── */

.canvas {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.canvas-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 0.25rem;
}

/* ── Slots ──────────────────────────────────────────────────────── */

.slot {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.15s;
}

.slot-text {
  border-left: 3px solid var(--accent);
}

.slot-empty {
  border-style: dashed;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.85rem;
  transition: border-color 0.15s, background 0.15s;
}

.slot-empty.drag-over {
  border-color: var(--accent);
  background: #151d2a;
}

.slot-placeholder {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.plus-icon {
  font-size: 1.2rem;
  color: var(--muted);
}

.slot-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}

.slot-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.text-badge  { background: rgba(255,180,84,0.15); color: var(--accent); }
.gov-badge   { background: rgba(194,217,76,0.15); color: var(--success); }
.audio-badge { background: rgba(130,180,255,0.15); color: #82b4ff; }
.video-badge { background: rgba(255,120,180,0.15); color: #ff78b4; }
.physics-badge { background: rgba(180,130,255,0.15); color: #b482ff; }
.adapter-badge { background: rgba(255,200,80,0.15); color: #ffc850; }

.slot-label {
  font-size: 0.72rem;
  color: var(--muted);
}

.slot-remove {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  line-height: 1;
  transition: color 0.15s;
}

.slot-remove:hover {
  color: var(--error);
}

.slot-body {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.slot-desc {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0;
}

/* ── Form fields ────────────────────────────────────────────────── */

.field-label {
  font-size: 0.8rem;
  color: var(--muted);
  display: block;
}

.field-input,
.field-select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--fg);
  font-size: 0.88rem;
  padding: 0.4rem 0.6rem;
  margin-top: 0.2rem;
  transition: border-color 0.15s;
}

.field-input:focus,
.field-select:focus {
  outline: none;
  border-color: var(--accent);
}

.field-row {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

/* ── Upgrade banner ─────────────────────────────────────────────── */

.upgrade-banner {
  background: rgba(255,107,107,0.1);
  border: 1px solid rgba(255,107,107,0.3);
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
  font-size: 0.85rem;
  color: var(--error);
}

.upgrade-banner a {
  color: var(--accent);
}

/* ── Export panel ───────────────────────────────────────────────── */

.export-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  position: sticky;
  top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.panel-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

.panel-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.5rem 0;
}

.export-btns {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.export-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg);
  font-size: 0.88rem;
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s, background 0.15s;
}

.export-btn:hover:not(:disabled) {
  border-color: var(--accent);
  background: #1a2030;
}

.export-btn:disabled,
.export-locked {
  opacity: 0.45;
  cursor: not-allowed;
}

.export-icon {
  font-size: 1rem;
}

.tier-note {
  font-size: 0.75rem;
  color: var(--muted);
}

.tier-note a {
  color: var(--accent);
}

/* ── Fingerprint zone ───────────────────────────────────────────── */

.fingerprint-zone {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.fp-badge {
  font-family: monospace;
  font-size: 0.82rem;
  padding: 0.35rem 0.6rem;
  border-radius: 5px;
  text-align: center;
  font-weight: 700;
}

.fp-unverified {
  background: rgba(92,103,115,0.2);
  color: var(--muted);
  border: 1px solid var(--border);
}

.fp-verified {
  background: rgba(194,217,76,0.15);
  color: var(--success);
  border: 1px solid rgba(194,217,76,0.3);
}

.fp-failed {
  background: rgba(255,107,107,0.15);
  color: var(--error);
  border: 1px solid rgba(255,107,107,0.3);
}

.fp-upload-label {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 0.6rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s;
}

.fp-upload-label:hover {
  border-color: var(--accent);
  color: var(--fg);
}

.fp-file-input {
  display: none;
}

.fp-hint {
  font-size: 0.7rem;
  color: var(--muted);
  line-height: 1.4;
}

.fp-hint code {
  font-family: monospace;
  color: var(--fg);
}

.fp-spinner {
  font-size: 0.8rem;
  color: var(--muted);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.fp-detail {
  font-family: monospace;
  font-size: 0.72rem;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.4rem 0.6rem;
  word-break: break-all;
}

/* ── Save section ───────────────────────────────────────────────── */

.save-btn {
  width: 100%;
  padding: 0.5rem;
  background: var(--accent);
  color: #0a0e14;
  border: none;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s;
}

.save-btn:hover {
  opacity: 0.88;
}

.save-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.save-result {
  font-size: 0.78rem;
  padding: 0.3rem 0.5rem;
  border-radius: 4px;
}

.save-result.ok {
  background: rgba(194,217,76,0.12);
  color: var(--success);
}

.save-result.err {
  background: rgba(255,107,107,0.12);
  color: var(--error);
}

/* ── Toast ──────────────────────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 1.2rem;
  font-size: 0.88rem;
  color: var(--fg);
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ── Responsive collapse ────────────────────────────────────────── */

@media (max-width: 900px) {
  .studio-layout {
    grid-template-columns: 1fr;
  }
  .palette,
  .export-panel {
    position: static;
  }
}


/* ── Pack Options (SRD flags details/summary) ───────────────────── */

.pack-options {
  margin-top: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.pack-options-title {
  padding: 0.5rem 0.75rem;
  font-size: 0.82rem;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  background: var(--bg);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.pack-options-title::before {
  content: '▶';
  font-size: 0.65rem;
  transition: transform 0.15s;
}

.pack-options[open] .pack-options-title::before {
  transform: rotate(90deg);
}

.pack-options-body {
  padding: 0.5rem 0.75rem 0.75rem;
  border-top: 1px solid var(--border);
  background: var(--card);
}

.field-hint {
  display: block;
  font-size: 0.74rem;
  color: var(--muted);
  margin-top: 0.15rem;
  font-weight: 400;
}