/* ─── RESET & BASE ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }


:root {
    --bg:         #f2f2f0;
    --surface:    #ffffff;
    --border:     #cccccc;
    --border-dark:#999999;
    --header-bg:  #1a1a2e;
    --header-txt: #e0e0e0;
    --accent:     #0055cc;
    --accent-lite:#e8f0ff;
    --row-even:   #f7f9ff;
    --row-odd:    #ffffff;
    --row-hover:  #fffde0;
    --th-bg:      #dde4f0;
    --th-txt:     #1a1a2e;
    --tag-active: #006600;
    --tag-ret:    #880000;
    --txt:        #111111;
    --txt-muted:  #666666;
    --danger:     #cc0000;
    --warn:       #996600;
    --ok:         #006600;
    --font:       'Courier New', Courier, monospace;
    --font-ui:    Arial, Helvetica, sans-serif;
}

html, body {
    height: 100%;
    font-family: var(--font-ui);
    font-size: 11.5px;
    background: var(--bg);
    color: var(--txt);
}

/* ─── HEADER ─── */
.header {
    background: var(--header-bg);
    color: var(--header-txt);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px;
    height: 36px;
    border-bottom: 2px solid var(--accent);
    position: sticky;
    top: 0;
    z-index: 200;
}

.header-left { display: flex; align-items: center; gap: 8px; }

.header-logo {
    font-size: 18px;
    line-height: 1;
}

.header h1 {
    font-size: 13px;
    font-weight: bold;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #fff;
}

.tab-nav { display: flex; gap: 2px; }

.tab-btn {
    background: #333355;
    color: #aab;
    border: 1px solid #555;
    padding: 4px 14px;
    font-size: 11px;
    cursor: pointer;
    font-family: var(--font-ui);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: background .15s, color .15s;
}

.tab-btn:hover { background: #444466; color: #fff; }
.tab-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.header-right { font-size: 10px; font-family: var(--font); color: #aab; letter-spacing: .08em; }

/* ─── FILTER BAR ─── */
.filter-bar {
    background: #e8e8e0;
    border-bottom: 1px solid var(--border-dark);
    padding: 5px 10px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.filter-group label {
    font-size: 10px;
    font-weight: bold;
    color: var(--txt-muted);
    text-transform: uppercase;
    letter-spacing: .04em;
}

.filter-group input,
.filter-group select {
    font-size: 11px;
    border: 1px solid var(--border-dark);
    background: #fff;
    padding: 2px 4px;
    color: var(--txt);
    outline: none;
}

.filter-group input:focus, .filter-group select:focus {
    border-color: var(--accent);
}

.filter-meta {
    margin-left: auto;
    font-size: 10px;
    color: var(--txt-muted);
    font-family: var(--font);
}

/* ─── MAIN / VIEWS ─── */
.main-content { padding: 10px; }

.view { display: none; }
.view.active { display: block; }

/* ─── TABLE ─── */
.table-scroll { overflow-x: auto; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid var(--border-dark);
    background: var(--surface);
}

.data-table th {
    background: var(--th-bg);
    color: var(--th-txt);
    border: 1px solid var(--border-dark);
    padding: 5px 6px;
    text-align: left;
    font-size: 10.5px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: .04em;
    white-space: nowrap;
    user-select: none;
}

.data-table th.sortable { cursor: pointer; }
.data-table th.sortable:hover { background: #c8d4ed; }
.data-table th.sorted-asc::after  { content: ' ▲'; font-size: 9px; }
.data-table th.sorted-desc::after { content: ' ▼'; font-size: 9px; }

.data-table td {
    border: 1px solid var(--border);
    padding: 4px 6px;
    white-space: nowrap;
    font-size: 11px;
}

.data-table th.num,
.data-table td.num { text-align: right; }

.data-table tbody tr:nth-child(even) { background: var(--row-even); }
.data-table tbody tr:nth-child(odd)  { background: var(--row-odd); }
.data-table tbody tr:hover { background: var(--row-hover); cursor: pointer; }

.iata-code {
    font-family: var(--font);
    font-weight: bold;
    color: var(--accent);
    letter-spacing: .06em;
    font-size: 12px;
}

.icao-code {
    font-family: var(--font);
    color: #555;
    font-size: 11px;
}

.tag {
    display: inline-block;
    padding: 1px 5px;
    font-size: 9.5px;
    font-weight: bold;
    border: 1px solid;
    letter-spacing: .03em;
    text-transform: uppercase;
}

.tag-active { color: var(--tag-active); border-color: var(--tag-active); background: #e8ffe8; }
.tag-retired { color: var(--tag-ret); border-color: var(--tag-ret); background: #ffe8e8; }
.tag-type   { color: #444; border-color: #aaa; background: #f0f0f0; }

/* ─── PAGINATION ─── */
.pagination-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 8px;
    background: #e8e8e0;
    border: 1px solid var(--border-dark);
    border-top: none;
}

.page-btn {
    background: #fff;
    border: 1px solid var(--border-dark);
    padding: 3px 10px;
    font-size: 11px;
    cursor: pointer;
    font-family: var(--font-ui);
    color: var(--txt);
}

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

.page-btn:disabled {
    background: #f0f0f0;
    color: #aaa;
    cursor: not-allowed;
}

.page-info {
    font-size: 11px;
    font-weight: bold;
    color: var(--txt-muted);
}

/* ─── MODAL OVERLAY ─── */
.overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 500;
    overflow-y: auto;
    padding: 30px 16px;
}

.overlay.open {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.modal {
    background: #fff;
    border: 1px solid var(--border-dark);
    width: 100%;
    max-width: 820px;
    position: relative;
    box-shadow: 0 6px 32px rgba(0,0,0,.25);
}

.modal-close {
    position: absolute;
    top: 8px;
    right: 10px;
    background: none;
    border: none;
    font-size: 16px;
    cursor: pointer;
    color: var(--txt-muted);
    z-index: 10;
    line-height: 1;
}
.modal-close:hover { color: var(--danger); }

/* ─── AIRPORT MODAL LAYOUT ─── */
.modal-header {
    background: var(--header-bg);
    color: #fff;
    padding: 14px 40px 14px 16px;
    border-bottom: 2px solid var(--accent);
}

.modal-header h2 { font-size: 15px; font-weight: bold; }
.modal-header .modal-codes { font-family: var(--font); font-size: 11px; color: #aab; margin-top: 2px; letter-spacing: .06em; }

.modal-body { padding: 0; }

/* Tabbed sections inside modal */
.modal-tabs { display: flex; border-bottom: 1px solid var(--border-dark); background: #f0f0ec; }
.modal-tab-btn {
    padding: 6px 14px;
    font-size: 11px;
    border: none;
    border-right: 1px solid var(--border);
    background: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--txt-muted);
}
.modal-tab-btn:hover { background: #e0e0d8; }
.modal-tab-btn.active { background: #fff; color: var(--accent); font-weight: bold; border-bottom: 2px solid var(--accent); margin-bottom: -1px; }

.modal-tab-panel { display: none; padding: 14px; }
.modal-tab-panel.active { display: block; }

/* ─── SPECS GRID ─── */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 1px;
    border: 1px solid var(--border);
    background: var(--border);
    margin-bottom: 10px;
}

.spec-cell {
    background: #fff;
    padding: 7px 10px;
}

.spec-label {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--txt-muted);
    font-weight: bold;
    margin-bottom: 2px;
}

.spec-value {
    font-family: var(--font);
    font-size: 13px;
    font-weight: bold;
    color: var(--accent);
}

.spec-value.plain { font-family: var(--font-ui); font-size: 11.5px; color: var(--txt); font-weight: normal; }

/* ─── TRIVIA BOX ─── */
.trivia-box {
    background: #f7f8fc;
    border-left: 3px solid var(--accent);
    padding: 8px 10px;
    font-size: 11px;
    color: var(--txt);
    line-height: 1.55;
    margin-top: 8px;
}

.trivia-box strong { font-size: 10px; text-transform: uppercase; letter-spacing: .05em; color: var(--txt-muted); display: block; margin-bottom: 3px; }

/* ─── METAR / TAF ─── */
.wx-loading {
    padding: 16px;
    text-align: center;
    color: var(--txt-muted);
    font-size: 11px;
    animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

.wx-error {
    padding: 12px;
    background: #fff5f5;
    border: 1px solid #ffcccc;
    color: var(--danger);
    font-size: 11px;
}

.wx-block { margin-bottom: 14px; }
.wx-block h3 {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--txt-muted);
    border-bottom: 1px solid var(--border);
    padding-bottom: 4px;
    margin-bottom: 8px;
    font-weight: bold;
}

.metar-raw {
    font-family: var(--font);
    font-size: 11.5px;
    background: #f8f8f8;
    border: 1px solid var(--border);
    padding: 7px 9px;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.6;
    color: #222;
}

.metar-decoded {
    margin-top: 8px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.wx-cell {
    background: #fff;
    padding: 5px 8px;
}

.wx-cell-label {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--txt-muted);
    font-weight: bold;
}

.wx-cell-value {
    font-family: var(--font);
    font-size: 12px;
    font-weight: bold;
    margin-top: 1px;
}

.wx-cell-value.ok   { color: var(--ok); }
.wx-cell-value.warn { color: var(--warn); }
.wx-cell-value.bad  { color: var(--danger); }

.flt-cat {
    display: inline-block;
    padding: 1px 6px;
    font-size: 10px;
    font-weight: bold;
    font-family: var(--font);
    color: #fff;
    letter-spacing: .05em;
}

.flt-cat.VFR  { background: var(--ok); }
.flt-cat.MVFR { background: #0055aa; }
.flt-cat.IFR  { background: var(--danger); }
.flt-cat.LIFR { background: #800080; }

.taf-line {
    font-family: var(--font);
    font-size: 11px;
    background: #f8f8f8;
    border: 1px solid var(--border);
    padding: 7px 9px;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.6;
}

/* ─── AIRCRAFT MODAL ─── */
.aircraft-photo {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--border);
}

/* ─── EMPTY STATE ─── */
.empty-state {
    padding: 40px;
    text-align: center;
    color: var(--txt-muted);
    font-size: 12px;
}

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #eee; }
::-webkit-scrollbar-thumb { background: #aaa; border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: #888; }

/* ─── SPINNER ─── */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ─── FOOTER ─── */
.app-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    font-size: 11px;
    color: var(--txt-muted);
}
.app-footer a {
    color: var(--accent);
    text-decoration: none;
}
.app-footer a:hover {
    text-decoration: underline;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 600px) {
    .header h1 { display: none; }
    .header-right { display: none; }
    .modal { max-width: 100%; }
}

/* ─── GLOBAL MAP VIEW ─── */
#map-view {
    display: none;
    height: calc(100vh - 52px - 57px - 40px);
    width: 100%;
}
#map-view.active {
    display: flex;
    flex-direction: column;
}
#global-map {
    flex: 1;
    width: 100%;
    min-height: 400px;
    background: var(--bg-main);
}

/* Custom Cluster Markers */
.marker-cluster-custom {
    background: transparent !important;
    border: none !important;
}
.cluster-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    font-family: var(--font);
    border: 2px solid rgba(0,0,0,0.3);
    color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
    transition: transform 0.15s ease;
}
.cluster-icon:hover { transform: scale(1.1); }
.cluster-small  .cluster-icon { width: 34px; height: 34px; font-size: 11px; background: #22c55e; }
.cluster-medium .cluster-icon { width: 42px; height: 42px; font-size: 12px; background: #f59e0b; }
.cluster-large  .cluster-icon { width: 52px; height: 52px; font-size: 13px; background: #ef4444; }

/* Map Popup — hardcoded dark theme (CSS vars unreliable in Leaflet context) */
.leaflet-popup-content-wrapper {
    background: #1a1f2e !important;
    border: 1px solid #2d3347 !important;
    border-radius: 8px !important;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6) !important;
    color: #e2e8f0 !important;
    padding: 0 !important;
}
.leaflet-popup-content {
    margin: 0 !important;
    line-height: 1.4 !important;
    color: #e2e8f0 !important;
}
.leaflet-popup-tip {
    background: #1a1f2e !important;
}
.leaflet-popup-close-button {
    color: #64748b !important;
    font-size: 18px !important;
    top: 6px !important;
    right: 8px !important;
    padding: 0 !important;
    line-height: 1 !important;
}
.leaflet-popup-close-button:hover {
    color: #e2e8f0 !important;
}
.map-popup {
    padding: 14px 16px;
    min-width: 210px;
}
.map-popup-title {
    font-weight: 700;
    font-size: 13px;
    color: #f1f5f9;
    margin-bottom: 5px;
    padding-right: 20px; /* space for close button */
    line-height: 1.3;
}
.map-popup-codes {
    font-family: 'JetBrains Mono', 'Fira Mono', monospace;
    font-size: 12px;
    color: #4a9eff;
    letter-spacing: 0.08em;
    margin-bottom: 4px;
    font-weight: 600;
}
.map-popup-meta {
    font-size: 11px;
    color: #94a3b8;
    margin-bottom: 8px;
}
.map-popup-type {
    display: inline-block;
    font-size: 9.5px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 3px;
    background: #0f1624;
    border: 1px solid #2d3347;
    color: #94a3b8;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.map-popup-btn {
    display: block;
    width: 100%;
    padding: 7px 10px;
    background: #4a9eff;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
    text-align: center;
    letter-spacing: 0.02em;
}
.map-popup-btn:hover { background: #2563eb; }

/* ─── AIRCRAFT MODAL ─── */
.aircraft-photo-container {
    width: 100%;
    height: 250px;
    background: var(--bg-main);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    border: 1px solid var(--border);
}
.aircraft-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.5s ease;
}
.aircraft-photo.loaded {
    opacity: 1;
}
.photo-loading {
    position: absolute;
    color: var(--txt-muted);
    font-size: 14px;
}
.photo-error {
    position: absolute;
    color: #ef4444;
    font-size: 14px;
    text-align: center;
    padding: 0 20px;
}

/* Map legend dots */
.map-dot-large  { color: #4a9eff; }
.map-dot-medium { color: #22c55e; }
.map-dot-small  { color: #94a3b8; }

/* ─── DOCS VIEW ─── */
#docs-view {
    display: none;
    padding: 30px;
    background: var(--bg-main);
    overflow-y: auto;
    height: calc(100vh - 52px - 40px); /* header and footer */
}
#docs-view.active {
    display: block;
}
.docs-container {
    max-width: 900px;
    margin: 0 auto;
}
.docs-header {
    text-align: center;
    margin-bottom: 40px;
}
.docs-header h2 {
    font-size: 28px;
    color: var(--txt-main);
    margin-bottom: 10px;
}
.docs-header p {
    font-size: 15px;
    color: var(--txt-muted);
}
.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}
.docs-card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.docs-card h3 {
    font-size: 18px;
    color: var(--accent);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-dark);
}
.docs-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--txt-main);
    margin-bottom: 12px;
}
.docs-card ul {
    list-style-type: disc;
    padding-left: 20px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--txt-main);
}
.docs-card li {
    margin-bottom: 8px;
}
.docs-card code {
    background: var(--bg-main);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono, monospace);
    font-size: 12px;
    color: var(--accent);
}

@media (max-width: 600px) {
    .docs-grid {
        grid-template-columns: 1fr;
    }
}