/* ==================================================================
   ADS-B Tracker — Main stylesheet
   Style: dark, technical, ATC-inspired. Compact, monospace data.
   No gradients, no shadows overload, no rounded-everything.
   ================================================================== */

/* ---- CSS variables ---- */
:root {
    /* Palette — dark navy/charcoal */
    --bg-app:        #0e1116;
    --bg-panel:      #161b22;
    --bg-panel-alt:  #1c232c;
    --bg-elevated:   #1f2731;
    --bg-input:      #0d1117;
    --bg-hover:      #21262d;

    --border:        #2a323c;
    --border-strong: #3a4351;
    --border-soft:   #1f262e;

    --text:          #d6dde5;
    --text-strong:   #f1f5fa;
    --text-muted:    #8a96a3;
    --text-dim:      #5f6b78;

    --accent:        #4a9eff;        /* ATC blue */
    --accent-soft:   #1f3a5e;
    --accent-hover:  #6db4ff;

    --ok:            #3fb950;
    --warn:          #d29922;
    --danger:        #f85149;
    --info:          #4a9eff;

    /* Altitude palette (synced with Python ALTITUDE_BANDS) */
    --alt-0:  #22cc22;
    --alt-1:  #88dd00;
    --alt-2:  #cccc00;
    --alt-3:  #eecc00;
    --alt-4:  #ee8800;
    --alt-5:  #ee4400;
    --alt-6:  #dd2200;
    --alt-7:  #bb00bb;

    /* Sizing */
    --topbar-h:      52px;
    --footer-h:      32px;
    --sidebar-w:     320px;
    --detail-w:      360px;

    /* Typography */
    --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono:  'JetBrains Mono', 'SF Mono', 'Cascadia Mono', Menlo, Consolas, monospace;

    /* Radius — minimal, professional */
    --r-sm: 2px;
    --r-md: 4px;
    --r-lg: 6px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    max-width: 100vw;
    height: 100%;
    overflow: hidden;
    background: var(--bg-app);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.45;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* ==================================================================
   TOPBAR
   ================================================================== */
.topbar {
    height: var(--topbar-h);
    flex-shrink: 0;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 24px;
}

.topbar__brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.topbar__logo {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    text-decoration: none;
}

.topbar__title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-strong);
    letter-spacing: 0.02em;
}

.topbar__subtitle {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 1px;
}

.topbar__nav {
    display: flex;
    gap: 4px;
    margin-left: 24px;
}

.nav-link {
    padding: 6px 12px;
    border-radius: var(--r-sm);
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
    border: 1px solid transparent;
    transition: background 0.12s, color 0.12s;
}

.nav-link:hover {
    background: var(--bg-hover);
    color: var(--text);
    text-decoration: none;
}

.nav-link.is-active {
    color: var(--text-strong);
    background: var(--bg-elevated);
    border-color: var(--border);
}

.topbar__status {
    margin-left: auto;
    display: flex;
    gap: 8px;
    align-items: center;
}

/* Kutuları tamamen kaldırıp, sadece metin bırakıyoruz */
.status-pill {
    display: inline-flex;
    align-items: center;
    background: transparent; /* Arka plan yok */
    border: none; /* Çerçeve yok */
    padding: 0;
    font-size: 12px;
    font-family: var(--font-mono); /* Terminal fontu */
    color: var(--text-muted); /* Varsayılan soluk renk[cite: 1] */
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* HTML'den gelen o gereksiz noktayı tamamen gizliyoruz */
.status-pill__dot {
    display: none;
}

/* Durum renklerini artık noktalara değil, doğrudan metne veriyoruz */
.status-pill.is-ok,
.status-pill.is-up { 
    color: var(--ok); /* Başarılıysa yeşil metin[cite: 1] */
}

.status-pill.is-error,
.status-pill.is-down { 
    color: var(--danger); /* Hataysa kırmızı metin[cite: 1] */
}

.status-pill--muted { 
    color: var(--text); /* Saat kısmı daha da soluk[cite: 1] */
}

/* Profesyonel detay: Durum metinlerinin arasına ince bir ayraç çizgisi ekleyelim */
.status-pill:not(:last-child)::after {
    content: "|";
    margin-left: 14px;
    color: var(--border-strong); /* Ayraç rengi[cite: 1] */
    font-weight: normal;
}

.uptime-history {
    display: none; /* Removed from index.php topbar */
}

/* Premium Uptime Panel (stats.php) */
.uptime-panel {
    margin: 20px 16px 0 16px;
    border-radius: var(--r-lg);
}

.uptime-panel__status {
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-mono);
}
.uptime-panel__status.is-up { color: var(--ok); }
.uptime-panel__status.is-down { color: var(--danger); }

.uptime-blocks {
    display: flex;
    gap: 4px;
    height: 48px;
    align-items: stretch;
}

.uptime-block {
    flex: 1;
    border-radius: var(--r-sm);
    background: var(--border-soft);
    transition: transform 0.2s, opacity 0.2s;
    cursor: crosshair;
}

.uptime-block:hover {
    transform: scaleY(1.1);
    opacity: 0.8;
}

.uptime-block.is-up { background: var(--ok); }
.uptime-block.is-warn { background: var(--warn); }
.uptime-block.is-down { background: var(--danger); }
.uptime-block.is-empty { background: var(--border-soft); }
.uptime-block.is-future { background: transparent; border: 1px dashed var(--border-soft); opacity: 0.3; }

.uptime-legend {
    display: flex;
    justify-content: space-between;
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-muted);
}
#uptimePercent {
    font-weight: 600;
    color: var(--text-strong);
}

/* ==================================================================
   LAYOUT
   ================================================================== */
.layout {
    flex: 1;
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr auto;
    overflow: hidden;
    min-height: 0;
}

/* ==================================================================
   SIDEBAR
   ================================================================== */
.sidebar {
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel {
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.panel--flex {
    flex: 1;
    min-height: 0;
}

.panel__header {
    padding: 10px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    border-bottom: 1px solid var(--border-soft);
    background: var(--bg-panel-alt);
}

.panel__title {
    margin: 0;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.panel__body {
    padding: 12px 14px;
}

.panel__body--scroll {
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    padding: 0;
}

.panel__body--flush { padding: 0; }

.panel__body--grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.panel__footer {
    padding: 8px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-soft);
    background: var(--bg-panel-alt);
}

/* ---- Badges ---- */
.badge {
    display: inline-block;
    min-width: 18px;
    padding: 1px 6px;
    margin-left: 4px;
    background: var(--accent-soft);
    color: var(--accent-hover);
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    border-radius: var(--r-sm);
    text-align: center;
}

/* ==================================================================
   FORM ELEMENTS
   ================================================================== */
.search-box {
    display: flex;
    gap: 4px;
    align-items: center;
}

.search-box input {
    flex: 1;
    padding: 6px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    font-family: var(--font-mono);
    font-size: 13px;
    outline: none;
    transition: border-color 0.12s;
}

.search-box input:focus {
    border-color: var(--accent);
}

.btn {
    padding: 6px 12px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text);
    border-radius: var(--r-sm);
    cursor: pointer;
    font-size: 13px;
    transition: background 0.12s, border-color 0.12s;
}

.btn:hover { background: var(--bg-hover); border-color: var(--border-strong); }
.btn:active { transform: translateY(1px); }

.btn--primary {
    background: var(--accent);
    color: #0a0a0a;
    border-color: var(--accent);
    font-weight: 600;
}
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn--ghost {
    background: transparent;
    border-color: var(--border-soft);
    color: var(--text-muted);
}
.btn--ghost:hover { color: var(--text); border-color: var(--border); }

.btn--link {
    background: transparent;
    border: none;
    color: var(--accent);
    padding: 2px 4px;
    font-size: 11px;
    cursor: pointer;
}
.btn--link:hover { color: var(--accent-hover); text-decoration: underline; }

.select {
    padding: 4px 8px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    font-size: 12px;
    cursor: pointer;
    outline: none;
}

/* ---- Filter rows ---- */
.filter-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
    border: none;
    padding: 0;
}

.filter-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 600;
}

.filter-range {
    display: flex;
    align-items: center;
    gap: 6px;
}

.filter-range input {
    flex: 1;
    min-width: 0;
    padding: 4px 8px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    font-family: var(--font-mono);
    font-size: 12px;
    outline: none;
}

.filter-range input:focus { border-color: var(--accent); }

.filter-sep {
    color: var(--text-dim);
    font-family: var(--font-mono);
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.12s, border-color 0.12s;
}

.chip:hover { background: var(--bg-hover); }

.chip input[type="checkbox"] {
    margin: 0;
    accent-color: var(--accent);
}

.chip input:checked + span { color: var(--text-strong); }

/* ---- Search results dropdown ---- */
.search-results {
    margin-top: 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    max-height: 260px;
    overflow-y: auto;
}

.search-result {
    padding: 6px 10px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-soft);
    font-size: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.search-result:hover { background: var(--bg-hover); }
.search-result:last-child { border-bottom: none; }

.search-result__cs {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-strong);
}

.search-result__meta {
    font-size: 11px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* ==================================================================
   AIRCRAFT LIST
   ================================================================== */
.ac-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.ac-list__empty {
    padding: 24px 14px;
    text-align: center;
    color: var(--text-dim);
    font-size: 13px;
}

.ac-item {
    padding: 8px 14px;
    border-bottom: 1px solid var(--border-soft);
    cursor: pointer;
    position: relative;
    transition: background 0.1s;
}

.ac-item:hover { background: var(--bg-hover); }
.ac-item.is-selected {
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    padding-left: 11px;
}
.ac-item.is-emergency {
    background: rgba(248, 81, 73, 0.08);
    border-left: 3px solid var(--danger);
    padding-left: 11px;
}

.ac-item__top, .ac-item__bot, .ac-item__last-seen {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ac-item__top { margin-bottom: 2px; }
.ac-item__bot { font-size: 11px; color: var(--text-muted); font-family: var(--font-mono); }
.ac-item__last-seen { font-size: 10px; color: var(--text-dim); margin-top: 4px; font-family: var(--font-mono); text-align: right; justify-content: flex-end; }

.ac-item__cs {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-strong);
    font-size: 13px;
}

.ac-item__alt {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text);
    font-weight: 500;
}

.ac-item__emg {
    position: absolute;
    top: 6px;
    right: 14px;
    font-size: 9px;
    font-weight: 700;
    color: var(--danger);
    background: rgba(248, 81, 73, 0.15);
    padding: 1px 4px;
    border-radius: var(--r-sm);
    font-family: var(--font-mono);
}

/* ==================================================================
   MAP PANE
   ================================================================== */
.map-pane {
    position: relative;
    background: #0a0d12;
    overflow: hidden;
}

.map {
    width: 100%;
    height: 100%;
}

.map-overlay {
    position: absolute;
    z-index: 500;
    pointer-events: none;
}

.map-overlay--top-left     { top: 12px; left: 12px; }
.map-overlay--top-right    { top: 12px; right: 12px; }
.map-overlay--top-center   { top: 12px; left: 50%; transform: translateX(-50%); }
.map-overlay--bottom-left  { bottom: 12px; left: 12px; }
.map-overlay--bottom-right { bottom: 12px; right: 12px; }

.stat-tile {
    background: rgba(22, 27, 34, 0.92);
    backdrop-filter: blur(6px);
    border: 1px solid var(--border);
    padding: 8px 12px;
    border-radius: var(--r-sm);
    display: inline-block;
    margin-right: 6px;
    pointer-events: auto;
}

.stat-tile__label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
}

.stat-tile__value {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-strong);
    line-height: 1.1;
    margin-top: 2px;
}

.stat-tile__unit {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 400;
    margin-left: 2px;
}

/* ---- Legend ---- */
.legend {
    background: rgba(22, 27, 34, 0.92);
    backdrop-filter: blur(6px);
    border: 1px solid var(--border);
    padding: 10px 12px;
    border-radius: var(--r-sm);
    pointer-events: auto;
}

.legend__title {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 6px;
}

.legend__list {
    list-style: none;
    margin: 0;
    padding: 0;
    font-family: var(--font-mono);
    font-size: 11px;
}

.legend__list li {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 2px;
    color: var(--text);
}

.legend__swatch {
    display: inline-block;
    width: 14px;
    height: 4px;
    border-radius: 1px;
}

/* ---- Emergency banner ---- */
.emergency-banner {
    background: rgba(248, 81, 73, 0.95);
    color: #fff;
    padding: 8px 16px;
    border-radius: var(--r-sm);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(248, 81, 73, 0.4);
    pointer-events: auto;
}

.emergency-banner__icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    color: var(--danger);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 14px;
}

/* ==================================================================
   DETAIL PANEL
   ================================================================== */
.detail {
    width: var(--detail-w);
    background: var(--bg-panel);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    overflow-x: hidden;
}

.detail[hidden] {
    display: none !important;
}

.detail__placeholder {
    padding: 40px 24px;
    text-align: center;
    color: var(--text-dim);
}

.detail__placeholder svg {
    color: var(--text-dim);
    opacity: 0.5;
    margin-bottom: 12px;
}

.detail__placeholder p {
    font-size: 13px;
    margin: 0;
}

.detail__content {
    padding: 0;
}

.detail-header {
    padding: 14px 16px;
    background: var(--bg-panel-alt);
    border-bottom: 1px solid var(--border);
}

.detail-header__cs {
    font-family: var(--font-mono);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-strong);
    line-height: 1.1;
}

.detail-header__hex {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.detail-header__close {
    float: right;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 20px;
    line-height: 1;
    padding: 0 4px;
}
.detail-header__close:hover { color: var(--text); }

.detail__section {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-soft);
}

.detail__section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 700;
    margin: 0 0 10px;
}

.kv-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 12px;
}

.kv {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.kv__label {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

.kv__value {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-strong);
    word-break: break-all;
}

.kv__value.is-muted { color: var(--text-muted); }
.kv__value.is-warn  { color: var(--warn); }
.kv__value.is-danger { color: var(--danger); }
.kv__value.is-ok    { color: var(--ok); }

/* Mini altitude graph */
.detail-chart {
    width: 100%;
    height: 120px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
}

.detail-chart__caption {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 6px;
    text-align: center;
}

/* ==================================================================
   PAGES (archive, stats, about)
   ================================================================== */
.page {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px;
}

.page__header {
    margin-bottom: 20px;
}

.page__title {
    margin: 0 0 4px;
    font-size: 22px;
    font-weight: 600;
    color: var(--text-strong);
}

.page__desc {
    margin: 0;
    color: var(--text-muted);
    font-size: 14px;
}

/* ---- Field (form) ---- */
.field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.field__label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 600;
}

.field input, .field select {
    padding: 6px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    font-size: 13px;
    outline: none;
    transition: border-color 0.12s;
}

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

.field--actions {
    flex-direction: row;
    gap: 8px;
    align-items: flex-end;
}

/* ---- Tables ---- */
.table-wrap {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.table th, .table td {
    padding: 8px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-soft);
    white-space: nowrap;
}

.table th {
    background: var(--bg-panel-alt);
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 1;
}

.table tbody tr { transition: background 0.1s; }
.table tbody tr:hover { background: var(--bg-hover); }

.table td.num, .table th.num {
    text-align: right;
    font-family: var(--font-mono);
}

.table td a {
    font-family: var(--font-mono);
    font-weight: 600;
}

.table__empty {
    text-align: center !important;
    color: var(--text-dim);
    padding: 32px 12px !important;
    font-style: italic;
}

/* ---- Metric grid (stats page) ---- */
.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.metric-card {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    padding: 14px 16px;
    border-radius: var(--r-sm);
}

.metric-card--warn { border-left-color: var(--warn); }
.metric-card--danger { border-left-color: var(--danger); }

.metric-card__label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 600;
}

.metric-card__value {
    font-family: var(--font-mono);
    font-size: 28px;
    font-weight: 600;
    color: var(--text-strong);
    line-height: 1.1;
    margin: 4px 0 2px;
}

.metric-card__unit {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
}

.metric-card__hint {
    font-size: 11px;
    color: var(--text-dim);
}

/* ---- Chart grid ---- */
.chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

@media (max-width: 1100px) {
    .chart-grid { grid-template-columns: 1fr; }
}

.chart {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
}

.chart--wide { max-width: 1200px; }

/* ---- Section title (about page) ---- */
.section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-strong);
    margin: 18px 0 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-soft);
}

.section-title:first-child { margin-top: 0; }

.paragraph {
    margin: 0 0 12px;
    color: var(--text);
    line-height: 1.6;
}

.bullet-list {
    margin: 0 0 12px 0;
    padding-left: 20px;
}

.bullet-list li {
    margin-bottom: 4px;
    line-height: 1.5;
}

.bullet-list--ordered { list-style: decimal; }

/* ---- Code ---- */
code {
    font-family: var(--font-mono);
    font-size: 0.92em;
    background: var(--bg-input);
    padding: 1px 5px;
    border-radius: var(--r-sm);
    color: var(--accent-hover);
}

/* ==================================================================
   FOOTER
   ================================================================== */
.footer {
    height: var(--footer-h);
    flex-shrink: 0;
    background: var(--bg-panel);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    font-size: 11px;
    color: var(--text-dim);
    font-family: var(--font-mono);
}

.footer__left, .footer__right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer__sep { color: var(--border-strong); }
.footer__version { color: var(--text-muted); }

/* ==================================================================
   UTILITIES
   ================================================================== */
.muted { color: var(--text-muted); }
.text-warn { color: var(--warn); }
.text-danger { color: var(--danger); }
.text-ok { color: var(--ok); }
.text-info { color: var(--info); }

/* ---- Scrollbars (subtle) ---- */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: var(--r-sm);
    border: 2px solid var(--bg-app);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}

/* ---- Leaflet overrides ---- */
.leaflet-container {
    background: #0a0d12;
    font-family: var(--font-sans);
}

.leaflet-control-attribution {
    background: rgba(22, 27, 34, 0.85) !important;
    color: var(--text-muted) !important;
    font-size: 10px !important;
}

.leaflet-control-attribution a {
    color: var(--accent) !important;
}

.leaflet-bar a {
    background: var(--bg-panel) !important;
    color: var(--text) !important;
    border-color: var(--border) !important;
}

.leaflet-bar a:hover {
    background: var(--bg-hover) !important;
}

/* Aircraft marker icon */
.ac-marker {
    background: transparent;
    border: none;
}

.ac-marker__icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid currentColor;
    background: rgba(0, 0, 0, 0.6);
    color: var(--marker-color, var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 9px;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 0 0 1px rgba(0,0,0,0.5);
}

.ac-marker__icon--selected {
    transform: scale(1.2);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.6);
}

.ac-marker__icon--emergency {
    animation: pulse-emergency 1s ease-in-out infinite;
}

@keyframes pulse-emergency {
    0%, 100% { box-shadow: 0 0 0 0 rgba(248, 81, 73, 0.7); }
    50% { box-shadow: 0 0 0 6px rgba(248, 81, 73, 0); }
}

/* Aircraft tooltip (label) */
.ac-label {
    background: rgba(22, 27, 34, 0.92);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 2px 6px;
    border-radius: var(--r-sm);
    white-space: nowrap;
    box-shadow: none;
}

.ac-label::before { display: none; }

/* Popup */
.leaflet-popup-content-wrapper {
    background: #000;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.leaflet-popup-tip {
    background: #000;
    border: 1px solid var(--border);
}

.leaflet-popup-content {
    margin: 12px 14px;
    font-size: 12px;
    line-height: 1.4;
}

.popup-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 4px;
    font-family: var(--font-mono);
}

.popup-row__label { color: var(--text-muted); }
.popup-row__value { color: var(--text-strong); font-weight: 600; }

.popup-title {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    color: var(--text-strong);
    margin-bottom: 6px;
}

.popup-link {
    display: inline-block;
    margin-top: 6px;
    padding: 4px 10px;
    background: var(--accent);
    color: #0a0a0a !important;
    font-weight: 600;
    font-size: 11px;
    border-radius: var(--r-sm);
    text-decoration: none !important;
}

.popup-link:hover { background: var(--accent-hover); }

/* ---- Responsive ---- */
.drag-handle { display: none; }

@media (max-width: 1100px) {
    .layout { grid-template-columns: 280px 1fr 320px; }
}

@media (max-width: 900px) {
    .layout { 
        display: block; 
        position: relative;
    }
    .map-pane {
        position: absolute;
        top: 0; left: 0; right: 0; bottom: 0;
        height: 100%; width: 100%;
        z-index: 1;
    }
    .sidebar { 
        position: absolute;
        bottom: 0; left: 0; right: 0;
        height: 40vh;
        z-index: 1000;
        border-right: none; 
        border-top: 1px solid var(--border); 
        border-radius: 16px 16px 0 0;
        box-shadow: 0 -4px 15px rgba(0,0,0,0.4);
        background: var(--bg-panel);
        transition: height 0.2s ease-out; /* Smooth snapping */
    }
    .detail { 
        position: absolute;
        bottom: 0; left: 0; right: 0;
        height: 45vh;
        z-index: 1010;
        border-left: none; 
        border-top: 1px solid var(--border); 
        border-radius: 16px 16px 0 0;
        box-shadow: 0 -4px 15px rgba(0,0,0,0.4);
        background: var(--bg-panel);
        width: 100%;
        box-sizing: border-box;
        transition: height 0.2s ease-out;
    }
    .sidebar.is-dragging, .detail.is-dragging {
        transition: none; /* Disable transition during active drag */
    }
    .drag-handle {
        display: flex !important;
        width: 100%;
        height: 20px;
        align-items: center;
        justify-content: center;
        cursor: grab;
        flex-shrink: 0;
        touch-action: none;
    }
    .drag-handle::before {
        content: '';
        width: 40px;
        height: 4px;
        background: var(--border-strong);
        border-radius: 2px;
    }
    #altitudeLegendOverlay {
        display: none !important;
    }
    .topbar {
        overflow-x: auto;
        white-space: nowrap;
    }
    .topbar::-webkit-scrollbar {
        display: none;
    }
    .topbar__subtitle { display: none; }
    .topbar__nav { margin-left: 0; }
}

/* ---- Print ---- */
@media print {
    .topbar, .footer, .map-overlay, .sidebar, .detail { display: none; }
    .layout { display: block; }
}