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

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #0f1117;
  color: #e2e8f0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Header ── */
header {
  background: #1a1d2e;
  border-bottom: 1px solid #2d3748;
  padding: 0 1rem;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
  z-index: 1000;
}
header h1 { font-size: 1.1rem; font-weight: 700; color: #63b3ed; white-space: nowrap; }
header h1 span { color: #68d391; }

.header-filters { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.filter-btn {
  padding: 3px 10px; border-radius: 999px; border: 1px solid transparent;
  font-size: 0.78rem; cursor: pointer; font-weight: 600; transition: all .15s;
}
.filter-btn.active { opacity: 1; }
.filter-btn:not(.active) { opacity: 0.45; filter: grayscale(0.5); }
.filter-btn:hover { opacity: 0.9; }

.freq-900  { background: #553c9a; border-color: #6b46c1; color: #e9d8fd; }
.freq-2400 { background: #2a4365; border-color: #2b6cb0; color: #bee3f8; }
.freq-5800 { background: #22543d; border-color: #276749; color: #c6f6d5; }
.freq-6000 { background: #744210; border-color: #975a16; color: #fefcbf; }
.freq-other { background: #2d3748; border-color: #4a5568; color: #e2e8f0; }

/* ── Header action area ── */
.header-actions { display: flex; gap: 0.5rem; align-items: center; margin-left: auto; }

#btn-add-ap {
  padding: 5px 14px; background: #3182ce; border: none;
  border-radius: 6px; color: #fff; font-size: 0.82rem; font-weight: 600;
  cursor: pointer; white-space: nowrap; transition: background .15s;
}
#btn-add-ap:hover { background: #2b6cb0; }

/* ── Dropdown ── */
.dropdown { position: relative; }
.btn-import {
  padding: 5px 12px; background: #2d3748; border: 1px solid #4a5568;
  border-radius: 6px; color: #e2e8f0; font-size: 0.82rem; font-weight: 600;
  cursor: pointer; white-space: nowrap; transition: background .15s;
}
.btn-import:hover { background: #3d4a60; }
.dropdown-menu {
  display: none; position: absolute; top: calc(100% + 4px); right: 0;
  background: #1a1d2e; border: 1px solid #2d3748; border-radius: 8px;
  min-width: 160px; z-index: 1100; overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}
.dropdown-menu.open { display: block; }
.dropdown-item {
  display: block; width: 100%; padding: 9px 14px; background: none; border: none;
  text-align: left; color: #e2e8f0; font-size: 0.82rem; cursor: pointer;
  transition: background .12s;
}
.dropdown-item:hover { background: #2d3748; }

/* ── Main layout ── */
.main { display: flex; flex: 1; overflow: hidden; }

/* ── Sidebar ── */
#sidebar {
  width: 300px; flex-shrink: 0;
  background: #1a1d2e; border-right: 1px solid #2d3748;
  display: flex; flex-direction: column; overflow: hidden;
}
#sidebar-header {
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid #2d3748;
  font-size: 0.78rem; color: #a0aec0; font-weight: 600;
  display: flex; justify-content: space-between; align-items: center;
}
#ap-count { font-weight: 700; color: #63b3ed; }
#ap-list { flex: 1; overflow-y: auto; padding: 4px 0; }

.ap-item {
  padding: 8px 12px; cursor: pointer; border-bottom: 1px solid #1e2233;
  transition: background .12s; display: flex; gap: 10px; align-items: center;
}
.ap-item:hover { background: #232640; }
.ap-item.selected { background: #2a3557; }

.ap-dot {
  width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0;
  border: 2px solid rgba(255,255,255,0.25);
}
.ap-info { flex: 1; min-width: 0; }
.ap-name { font-size: 0.85rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ap-meta { font-size: 0.72rem; color: #718096; margin-top: 1px; }
.ap-freq-badge {
  font-size: 0.68rem; font-weight: 700; padding: 1px 6px;
  border-radius: 4px; flex-shrink: 0;
}

/* ── Map ── */
#map { flex: 1; }

/* ── Legend ── */
#legend {
  position: absolute; bottom: 28px; right: 10px; z-index: 900;
  background: rgba(26,29,46,0.92); border: 1px solid #2d3748;
  border-radius: 8px; padding: 10px 14px; font-size: 0.75rem;
  min-width: 160px; backdrop-filter: blur(4px);
}
#legend h3 { font-size: 0.78rem; color: #a0aec0; margin-bottom: 8px; }
.legend-row { display: flex; align-items: center; gap: 8px; margin: 4px 0; }
.legend-dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid rgba(255,255,255,0.3); }

/* ── Modal ── */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.65); z-index: 2000;
  align-items: center; justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal {
  background: #1a1d2e; border: 1px solid #2d3748; border-radius: 12px;
  padding: 1.5rem; width: 460px; max-width: 95vw; max-height: 90vh; overflow-y: auto;
}
.modal h2 { font-size: 1rem; margin-bottom: 1rem; color: #63b3ed; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.7rem; }
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group.full { grid-column: 1/-1; }
.form-group label { font-size: 0.75rem; color: #a0aec0; font-weight: 600; }
.form-group input, .form-group select, .form-group textarea {
  background: #0f1117; border: 1px solid #2d3748; border-radius: 6px;
  color: #e2e8f0; padding: 6px 10px; font-size: 0.83rem;
  transition: border-color .15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: #3182ce;
}
.form-group textarea { resize: vertical; min-height: 54px; }

.modal-actions { display: flex; gap: 0.5rem; justify-content: flex-end; margin-top: 1rem; }
.btn-cancel {
  padding: 6px 16px; background: transparent; border: 1px solid #4a5568;
  border-radius: 6px; color: #a0aec0; cursor: pointer; font-size: 0.83rem;
}
.btn-cancel:hover { border-color: #718096; color: #e2e8f0; }
.btn-save {
  padding: 6px 16px; background: #3182ce; border: none;
  border-radius: 6px; color: #fff; cursor: pointer; font-size: 0.83rem; font-weight: 600;
}
.btn-save:hover { background: #2b6cb0; }
.btn-delete {
  padding: 6px 16px; background: #c53030; border: none;
  border-radius: 6px; color: #fff; cursor: pointer; font-size: 0.83rem; margin-right: auto;
}
.btn-delete:hover { background: #9b2c2c; }

/* ── Popup ── */
.leaflet-popup-content-wrapper {
  background: #1a1d2e !important; border: 1px solid #2d3748 !important;
  border-radius: 8px !important; color: #e2e8f0 !important;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5) !important;
}
.leaflet-popup-tip { background: #1a1d2e !important; }
.popup-title { font-size: 0.95rem; font-weight: 700; margin-bottom: 6px; color: #63b3ed; }
.popup-row { font-size: 0.78rem; display: flex; justify-content: space-between; gap: 12px; padding: 2px 0; }
.popup-label { color: #718096; }
.popup-value { font-weight: 600; }
.popup-edit-btn {
  margin-top: 8px; width: 100%; padding: 5px; background: #2d3748; border: none;
  border-radius: 5px; color: #e2e8f0; cursor: pointer; font-size: 0.78rem;
}
.popup-edit-btn:hover { background: #3d4a60; }

/* ── Signal bar ── */
.signal-bar-wrap { margin-top: 6px; }
.signal-label { font-size: 0.72rem; color: #718096; margin-bottom: 2px; }
.signal-bar { height: 6px; border-radius: 3px; background: #2d3748; overflow: hidden; }
.signal-fill { height: 100%; border-radius: 3px; }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2d3748; border-radius: 3px; }

/* ── Wider modal variant ── */
.modal-wide { width: 600px; }

/* ── Info / error boxes ── */
.info-box {
  background: #1e2a3a; border: 1px solid #2b6cb0; border-radius: 6px;
  padding: 10px 14px; font-size: 0.78rem; color: #bee3f8; line-height: 1.6;
}
.info-box code {
  background: #2d3748; border-radius: 3px; padding: 1px 5px; font-size: 0.75rem; color: #90cdf4;
}
.error-box {
  background: #2d1b1b; border: 1px solid #c53030; border-radius: 6px;
  padding: 10px 14px; font-size: 0.82rem; color: #fc8181; margin-top: 0.5rem;
}
.success-box {
  background: #1a2d1a; border: 1px solid #276749; border-radius: 6px;
  padding: 10px 14px; font-size: 0.82rem; color: #68d391; margin-top: 0.5rem;
}

/* ── Section label ── */
.section-label {
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.05em; color: #718096; margin-bottom: 6px;
}

/* ── Preview table ── */
.preview-table {
  width: 100%; border-collapse: collapse; font-size: 0.75rem;
}
.preview-table th {
  background: #2d3748; padding: 5px 8px; text-align: left;
  color: #a0aec0; font-weight: 600; border-bottom: 1px solid #4a5568;
  white-space: nowrap;
}
.preview-table td {
  padding: 4px 8px; border-bottom: 1px solid #1e2233; white-space: nowrap;
  max-width: 160px; overflow: hidden; text-overflow: ellipsis; color: #cbd5e0;
}
.preview-table tr:hover td { background: #232640; }
.col-mapped { color: #68d391; }
.col-unmapped { color: #718096; }

/* ── SNMP raw table ── */
.snmp-table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }
.snmp-table td { padding: 4px 8px; border-bottom: 1px solid #1e2233; }
.snmp-table td:first-child { color: #a0aec0; font-weight: 600; width: 38%; }
.snmp-table td:last-child { color: #e2e8f0; font-family: monospace; }
.snmp-table .vendor-row td { color: #f6ad55; }

/* ── Utility buttons ── */
.btn-secondary {
  padding: 6px 16px; background: #2d3748; border: 1px solid #4a5568;
  border-radius: 6px; color: #e2e8f0; cursor: pointer; font-size: 0.83rem;
}
.btn-secondary:hover { background: #3d4a60; }
.btn-link {
  background: none; border: none; color: #4299e1; cursor: pointer;
  font-size: 0.78rem; padding: 0; text-decoration: underline;
}
.btn-link:hover { color: #63b3ed; }

/* ── Spinner ── */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  display: inline-block; width: 14px; height: 14px;
  border: 2px solid #4a5568; border-top-color: #63b3ed;
  border-radius: 50%; animation: spin 0.7s linear infinite;
  vertical-align: middle; margin-right: 6px;
}