/* ─────────────────────────────────────────────
   components.css — Buttons, cards, modals, alerts, toast
   ───────────────────────────────────────────── */

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: none;
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--accent);
  color: #0d0f0e;
}
.btn-primary:hover { background: var(--accent-dim); transform: translateY(-1px); }

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

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid rgba(255,82,82,0.3);
  padding: 6px 14px;
  font-size: 0.78rem;
}
.btn-danger:hover { background: rgba(255,82,82,0.1); }

.btn-ok {
  background: transparent;
  color: var(--ok);
  border: 1px solid rgba(90,255,160,0.3);
  padding: 6px 14px;
  font-size: 0.78rem;
}
.btn-ok:hover { background: rgba(90,255,160,0.1); }

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
}

/* ─── Alert Banner ─── */
#alert-banner {
  display: none;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.alert-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  animation: slideIn 0.3s ease;
}

.alert-item.overdue {
  background: rgba(255,82,82,0.1);
  border: 1px solid rgba(255,82,82,0.25);
  color: #ff8a8a;
}

.alert-item.upcoming {
  background: rgba(255,179,71,0.08);
  border: 1px solid rgba(255,179,71,0.22);
  color: #ffc87a;
}

.alert-item .alert-icon { font-size: 1.1rem; flex-shrink: 0; }
.alert-item strong { color: var(--text); }

/* ─── Record Cards ─── */
.records-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.record-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s;
}

.record-card:hover { border-color: var(--border-hi); }
.record-card.status-overdue  { border-left: 3px solid var(--danger); }
.record-card.status-upcoming { border-left: 3px solid var(--warning); }
.record-card.status-active   { border-left: 3px solid var(--accent); }
.record-card.status-returned { border-left: 3px solid var(--muted-lo); opacity: 0.55; }

.record-main {
  padding: 16px 20px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: start;
}

.record-item-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.record-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  font-size: 0.76rem;
  color: var(--muted);
  font-family: var(--mono);
}

.record-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.record-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  align-items: flex-start;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ─── Status Badges ─── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.68rem;
  font-weight: 700;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.badge-overdue  { background: rgba(255,82,82,0.15);  color: var(--danger); }
.badge-upcoming { background: rgba(255,179,71,0.15); color: var(--warning); }
.badge-active   { background: rgba(184,255,90,0.12); color: var(--accent); }
.badge-returned { background: rgba(122,128,120,0.12); color: var(--muted); }

/* ─── Empty State ─── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}

.empty-state .empty-icon { font-size: 2.8rem; margin-bottom: 12px; }
.empty-state p { font-size: 0.88rem; }

/* ─── Modal ─── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(6px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.open { display: flex; animation: fadeIn 0.2s ease; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalIn 0.25s ease;
}

.modal-header {
  padding: 24px 28px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title { font-size: 1.1rem; font-weight: 700; }

.modal-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.4rem;
  line-height: 1;
  padding: 4px;
  transition: color 0.15s;
}

.modal-close:hover { color: var(--text); }

.modal-body { padding: 24px 28px 28px; }

/* ─── Forms ─── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group { display: flex; flex-direction: column; }
.form-group.full { grid-column: 1 / -1; }

.form-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ─── Settings Panel ─── */
.settings-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 32px;
}

.settings-panel summary {
  cursor: pointer;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  font-family: var(--mono);
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.settings-panel summary::before {
  content: '▶';
  font-size: 0.6rem;
  transition: transform 0.2s;
}

.settings-panel[open] summary::before { transform: rotate(90deg); }

.settings-content { margin-top: 20px; }

.settings-note {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.7;
  padding: 14px 16px;
  background: var(--surface2);
  border-radius: 8px;
  border-left: 3px solid var(--accent);
  margin-bottom: 16px;
}

.settings-note code {
  background: rgba(255,255,255,0.07);
  padding: 1px 5px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.85em;
}

.settings-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-family: var(--mono);
  margin-top: 12px;
}

.dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.dot-green  { background: var(--ok);      box-shadow: 0 0 6px var(--ok); }
.dot-red    { background: var(--danger); }
.dot-yellow { background: var(--warning); }

/* ─── Loading Spinner ─── */
.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 40px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.82rem;
}

/* ─── Toast ─── */
#toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 0.83rem;
  font-family: var(--mono);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 200;
  pointer-events: none;
  white-space: nowrap;
}

#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ─── Animations ─── */
@keyframes fadeIn    { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideIn   { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeUp    { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes modalIn   { from { opacity: 0; transform: scale(0.96) translateY(12px); } to { opacity: 1; transform: scale(1) translateY(0); } }
@keyframes spin      { to { transform: rotate(360deg); } }

/* ─── Responsive ─── */
@media (max-width: 580px) {
  .form-grid { grid-template-columns: 1fr; }
  .form-group.full { grid-column: 1; }
  .record-main { grid-template-columns: 1fr; }
  .record-actions { justify-content: flex-start; }
}