:root {
  --bg: #0f172a;
  --bg-raised: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-input: rgba(15, 23, 42, 0.6);
  --border: rgba(148, 163, 184, 0.12);
  --border-focus: #3b82f6;
  --text: #f1f5f9;
  --text-dim: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.25);
  --green: #22c55e;
  --red: #ef4444;
  --red-dim: rgba(239, 68, 68, 0.15);
  --radius: 12px;
  --radius-lg: 16px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

[hidden] { display: none !important; }

/* ─── Auth ─── */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 1.5rem;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(59,130,246,0.08) 0%, transparent 60%),
    var(--bg);
}

.auth-container {
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.auth-logo {
  font-size: 3.5rem;
  margin-bottom: 0.25rem;
  filter: drop-shadow(0 0 20px var(--accent-glow));
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { filter: drop-shadow(0 0 20px var(--accent-glow)); }
  50% { filter: drop-shadow(0 0 32px rgba(59,130,246,0.4)); }
}

.auth-title {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #f1f5f9 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

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

.input-group input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input-group input::placeholder { color: var(--text-muted); }

.input-group input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-error {
  color: var(--red);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.25rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ─── Buttons ─── */
.btn-primary {
  padding: 13px 20px;
  font-size: 1rem;
  font-weight: 600;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform 0.1s;
}
.btn-primary:active { transform: scale(0.98); background: #2563eb; }

.btn-secondary {
  padding: 13px 20px;
  font-size: 1rem;
  font-weight: 500;
  background: var(--bg-input);
  color: var(--text-dim);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition);
}
.btn-secondary:active { background: var(--bg-raised); }

.btn-ghost {
  padding: 13px 20px;
  font-size: 1rem;
  font-weight: 500;
  background: transparent;
  color: var(--text-dim);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.btn-ghost:active { border-color: var(--text-muted); color: var(--text); }

.btn-danger {
  padding: 13px 20px;
  font-size: 1rem;
  font-weight: 600;
  background: var(--red);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform 0.1s;
}
.btn-danger:active { transform: scale(0.98); background: #dc2626; }

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  color: var(--text-dim);
  border-radius: 10px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.btn-icon:active { background: rgba(255,255,255,0.08); color: var(--text); }

.full-width { width: 100%; }

/* ─── Header ─── */
header {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 1rem;
  height: 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-left { display: flex; align-items: center; gap: 0.5rem; }
.header-logo { font-size: 1.4rem; }
.header-title { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.02em; }
.header-right { display: flex; align-items: center; gap: 0.25rem; }

.user-badge {
  font-size: 0.85rem;
  color: var(--text-dim);
  padding: 4px 10px;
  background: rgba(255,255,255,0.05);
  border-radius: 20px;
}

/* ─── Tabs ─── */
.tabs {
  display: flex;
  position: sticky;
  top: 56px;
  z-index: 45;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 1rem;
}

.tab {
  flex: 1;
  padding: 12px 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ─── App Body ─── */
.app-body {
  max-width: 600px;
  margin: 0 auto;
  padding-bottom: 100px;
}

/* ─── Search ─── */
.search-bar {
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.search-icon { color: var(--text-muted); flex-shrink: 0; }

.search-bar input {
  flex: 1;
  padding: 11px 14px;
  font-size: 1rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-bar input::placeholder { color: var(--text-muted); }
.search-bar input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ─── FAB ─── */
.fab {
  position: fixed;
  bottom: max(1.5rem, env(safe-area-inset-bottom, 1.5rem));
  right: 1.5rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 24px rgba(59,130,246,0.4);
  transition: transform 0.15s, box-shadow var(--transition);
  z-index: 30;
}
.fab:active { transform: scale(0.92); }

/* ─── Cards ─── */
#fuse-list { padding: 0 1rem; }
#location-list { padding: 1rem; }

.location-group { margin-top: 1.25rem; }

.location-header {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 0.25rem 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.location-header::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.875rem 1rem;
  margin-bottom: 0.5rem;
  transition: border-color var(--transition), background var(--transition);
  animation: card-in 0.25s ease-out both;
}

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

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.card .desc {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-top: 0.3rem;
  line-height: 1.45;
}

.card .meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

.card-actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
  margin: -4px -6px -4px 0;
}

.card-actions button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: 8px;
  color: var(--text-muted);
  transition: background var(--transition), color var(--transition);
}
.card-actions button:active { background: rgba(255,255,255,0.08); color: var(--text); }
.card-actions .btn-del:active { background: var(--red-dim); color: var(--red); }

.empty-state {
  text-align: center;
  padding: 4rem 1rem 2rem;
  color: var(--text-muted);
  font-size: 1rem;
}
.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
  opacity: 0.4;
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
  padding: 0;
  animation: overlay-in 0.2s ease-out;
}
@keyframes overlay-in { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 1.5rem;
  width: 100%;
  max-width: 500px;
  max-height: 85vh;
  overflow-y: auto;
  animation: modal-up 0.25s ease-out;
}
@keyframes modal-up { from { transform: translateY(100%); } to { transform: translateY(0); } }

@media (min-width: 500px) {
  .modal-overlay { align-items: center; padding: 1rem; }
  .modal {
    border-radius: var(--radius-lg);
    animation: modal-scale 0.2s ease-out;
  }
  @keyframes modal-scale { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}
.modal-header h2 { font-size: 1.2rem; font-weight: 700; }
.modal-x { margin: -8px -8px 0 0; }

.modal label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 1rem 0 0.35rem;
}
.modal label:first-of-type { margin-top: 0; }

.modal input,
.modal textarea,
.modal select {
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.modal select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

.modal select option {
  background: var(--bg-raised);
  color: var(--text);
}

.modal input::placeholder,
.modal textarea::placeholder { color: var(--text-muted); }

.modal input:focus,
.modal textarea:focus,
.modal select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.modal-actions button { flex: 1; }

.modal-sm { max-width: 360px; }

.delete-msg {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}