*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f0f13;
  --surface: #1a1a24;
  --surface2: #22222f;
  --border: #2e2e3f;
  --accent: #6366f1;
  --accent-dim: #4f51c4;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --text: #e8e8f0;
  --text-dim: #8888aa;
  --green: #34d399;
  --red: #f87171;
  --radius: 12px;
  --radius-sm: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 2rem 1rem 4rem;
}

.container {
  width: 100%;
  max-width: 720px;
}

/* Header */
header { margin-bottom: 2.5rem; }

.logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.tagline {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 2px;
}

/* Drop zone */
.drop-zone {
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  outline: none;
}

.drop-zone:hover,
.drop-zone:focus {
  border-color: var(--accent);
  background: var(--surface2);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-glow);
  box-shadow: 0 0 0 6px var(--accent-glow);
}

.drop-icon {
  color: var(--text-dim);
  margin-bottom: 1rem;
  display: flex;
  justify-content: center;
}

.drop-zone.drag-over .drop-icon { color: var(--accent); }

.drop-title {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.drop-title .link {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.drop-sub {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* Queue */
.queue {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  animation: slide-in 0.2s ease;
}

@keyframes slide-in {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.card-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 75%;
}

.card-status {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

.status-pending { color: var(--text-dim); }
.status-done    { color: var(--green); }
.status-error   { color: var(--red); }

/* Progress bar */
.card-progress {
  height: 3px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.4s ease;
}

.progress-bar.done  { background: var(--green); }
.progress-bar.error { background: var(--red); }

/* Card meta */
.card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
}

.stat { color: var(--text-dim); }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
}

.badge-green { background: rgba(52, 211, 153, 0.15); color: var(--green); }
.badge-gray  { background: rgba(136, 136, 170, 0.15); color: var(--text-dim); }

.error-msg { color: var(--red); font-size: 0.8rem; }

/* Actions */
.card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  width: 100%;
}

.btn {
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity 0.15s, transform 0.1s;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-dim); }

.btn-ghost {
  background: var(--surface2);
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--accent); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
  backdrop-filter: blur(4px);
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 700px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 8px;
  border-radius: 4px;
  line-height: 1;
}
.modal-close:hover { background: var(--surface2); color: var(--text); }

.modal-body {
  overflow-y: auto;
  padding: 1.25rem;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text-dim);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Footer */
footer {
  margin-top: 3rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-dim);
}

footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* Responsive */
@media (max-width: 480px) {
  .drop-zone { padding: 2rem 1rem; }
  .card-actions { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
}