/* =============================================================================
   ASR-Now — "Signal Telemetry" dark dashboard theme
   Fonts (Chakra Petch / Sora / JetBrains Mono) are loaded via <link> in
   wwwroot/index.html for parallel fetching (avoids @import reflow).
   ============================================================================= */

:root {
    --bg-abyss: #05080f;
    --bg-deep: #080d18;
    --bg-panel: rgba(17, 26, 44, 0.66);
    --bg-panel-solid: #111a2c;
    --bg-elevated: rgba(25, 37, 61, 0.85);
    --stroke: rgba(86, 224, 224, 0.14);
    --stroke-strong: rgba(86, 224, 224, 0.32);
    --grid-line: rgba(86, 224, 224, 0.045);

    --signal: #2ee6d6;          /* primary cyan/teal accent */
    --signal-bright: #5cf6e8;
    --signal-dim: rgba(46, 230, 214, 0.16);
    --signal-glow: rgba(46, 230, 214, 0.45);
    --amber: #ffb454;
    --rose: #ff5d7a;
    --lime: #8af56b;

    --text: #e6edf6;
    --text-muted: #8ea3bf;
    --text-faint: #5d728f;

    --radius: 16px;
    --radius-sm: 10px;
    --shadow-panel: 0 18px 50px -20px rgba(0, 0, 0, 0.85);
    --shadow-glow: 0 0 0 1px var(--stroke-strong), 0 0 40px -8px var(--signal-glow);

    --font-display: 'Chakra Petch', sans-serif;
    --font-body: 'Sora', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    color: var(--text);
    background-color: var(--bg-abyss);
    -webkit-font-smoothing: antialiased;
}

/* Atmospheric radar-grid + glow mesh behind everything */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(1100px 700px at 78% -10%, rgba(46, 230, 214, 0.10), transparent 60%),
        radial-gradient(900px 600px at 8% 110%, rgba(64, 120, 255, 0.10), transparent 55%),
        var(--bg-abyss);
}
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 85%);
    pointer-events: none;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--text);
}

a, .btn-link { color: var(--signal); text-decoration: none; }
a:hover { color: var(--signal-bright); }

code { color: var(--signal-bright); font-family: var(--font-mono); }

/* ---------------------------------------------------------------- App shell */
.page {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 264px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, rgba(12, 19, 33, 0.92), rgba(8, 13, 24, 0.92));
    border-right: 1px solid var(--stroke);
    backdrop-filter: blur(14px);
    position: sticky;
    top: 0;
    height: 100vh;
}

main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.top-row {
    height: 62px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.75rem;
    border-bottom: 1px solid var(--stroke);
    background: rgba(8, 13, 24, 0.55);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 20;
}
.top-row-title {
    font-family: var(--font-display);
    font-size: 0.78rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-muted);
}
.top-row-user { font-size: 0.85rem; color: var(--text-muted); }
.top-row-user strong { color: var(--signal); font-weight: 600; }

.content {
    padding: 1.5rem 1.75rem 3rem;
    flex: 1;
}

/* ------------------------------------------------------------- Navigation */
.nav-brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 62px;
    padding: 0 1.4rem;
    border-bottom: 1px solid var(--stroke);
}

/* Hamburger toggle — hidden on desktop, shown on small screens via the media query. */
.nav-toggler {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 40px;
    height: 36px;
    padding: 0 9px;
    background: transparent;
    border: 1px solid var(--stroke-strong);
    border-radius: 9px;
    cursor: pointer;
}
.nav-toggler:hover { background: var(--signal-dim); }
.nav-toggler-bar { display: block; height: 2px; width: 100%; background: var(--text); border-radius: 2px; }

/* On desktop the menu is always part of the column layout; on mobile it collapses. */
.nav-menu-collapse {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}
.nav-brand {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.04em;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.nav-brand:hover { color: var(--signal-bright); }

.nav-scrollable {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0.85rem;
}
.nav-links { display: flex; flex-direction: column; gap: 0.25rem; }

.nav-section-label {
    font-family: var(--font-display);
    font-size: 0.66rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-faint);
    padding: 1.1rem 0.85rem 0.4rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.7rem 0.9rem;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.92rem;
    font-weight: 500;
    transition: all 0.18s ease;
    position: relative;
}
.nav-icon { font-size: 1.05rem; line-height: 1; filter: grayscale(0.3); }

.nav-link:hover {
    color: var(--text);
    background: rgba(46, 230, 214, 0.07);
}
.nav-link.active {
    color: var(--signal-bright);
    background: var(--signal-dim);
    box-shadow: inset 0 0 0 1px var(--stroke-strong);
}
.nav-link.active::before {
    content: "";
    position: absolute;
    left: -0.85rem;
    top: 18%;
    height: 64%;
    width: 3px;
    border-radius: 3px;
    background: var(--signal);
    box-shadow: 0 0 12px var(--signal-glow);
}

.nav-footer {
    border-top: 1px solid var(--stroke);
    padding: 1rem 1rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}
.nav-user { display: flex; align-items: center; gap: 0.7rem; }
.nav-user-avatar {
    width: 38px; height: 38px;
    border-radius: 11px;
    display: grid; place-items: center;
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--bg-abyss);
    background: linear-gradient(135deg, var(--signal-bright), var(--signal));
    box-shadow: 0 0 18px -4px var(--signal-glow);
}
.nav-user-meta { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.nav-user-name { font-weight: 600; font-size: 0.9rem; color: var(--text); overflow: hidden; text-overflow: ellipsis; }
.nav-user-role { font-size: 0.72rem; color: var(--text-faint); letter-spacing: 0.04em; }

.btn-logout {
    width: 100%;
    text-align: center;
    padding: 0.55rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--stroke);
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.18s ease;
}
.btn-logout:hover {
    color: var(--rose);
    border-color: rgba(255, 93, 122, 0.4);
    background: rgba(255, 93, 122, 0.08);
}

/* ----------------------------------------------------------------- Buttons */
.btn {
    font-family: var(--font-body);
    font-weight: 600;
    letter-spacing: 0.02em;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    padding: 0.6rem 1.1rem;
    transition: all 0.18s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.btn-primary {
    background: linear-gradient(135deg, var(--signal-bright), var(--signal));
    color: #04221f;
    border: none;
    box-shadow: 0 8px 26px -10px var(--signal-glow);
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); box-shadow: 0 12px 30px -10px var(--signal-glow); }
.btn-success {
    background: linear-gradient(135deg, #aef58a, var(--lime));
    color: #0c2406;
    border: none;
    box-shadow: 0 8px 26px -12px rgba(138, 245, 107, 0.5);
}
.btn-success:hover { filter: brightness(1.06); transform: translateY(-1px); }
.btn-warning { background: linear-gradient(135deg, #ffc878, var(--amber)); color: #2e1a02; border: none; }
.btn-danger { background: linear-gradient(135deg, #ff7b91, var(--rose)); color: #2e0510; border: none; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--stroke-strong);
    color: var(--text-muted);
}
.btn-outline:hover { color: var(--signal-bright); border-color: var(--signal); background: var(--signal-dim); }
.btn-sm { padding: 0.34rem 0.7rem; font-size: 0.78rem; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

/* ------------------------------------------------------------- Glass cards */
.page-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.5rem;
    letter-spacing: 0.02em;
    margin-bottom: 1.25rem;
    position: relative;
    padding-left: 0.9rem;
}
.page-title::before {
    content: "";
    position: absolute; left: 0; top: 8%;
    height: 84%; width: 4px; border-radius: 4px;
    background: var(--signal);
    box-shadow: 0 0 14px var(--signal-glow);
}

.page-panel, .not-authorized-panel {
    background: var(--bg-panel);
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    padding: 2rem;
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-panel);
}
.page-panel .lead { color: var(--text-muted); max-width: 60ch; }

.search-card {
    background: var(--bg-panel);
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    padding: 1.5rem;
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-panel);
    margin-bottom: 1.5rem;
}

.form-card {
    background: var(--bg-panel);
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    padding: 1.6rem 1.75rem;
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-panel);
    max-width: 480px;
}
.form-actions { display: flex; justify-content: flex-end; gap: 0.7rem; margin-top: 0.4rem; }
.form-hint { color: var(--text-faint); font-size: 0.8rem; margin: 0.2rem 0 0.6rem; }

.or-divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-faint);
    font-family: var(--font-display);
    font-size: 0.66rem;
    letter-spacing: 0.18em;
    margin: 1.1rem 0;
}
.or-divider::before, .or-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--stroke);
}
.or-divider span { padding: 0 0.9rem; }

.resolved-name { color: var(--text-muted); font-size: 0.85rem; }

.location-display {
    padding: 0.7rem 1rem;
    border-radius: var(--radius-sm);
    background: var(--signal-dim);
    border: 1px solid var(--stroke);
    font-size: 0.9rem;
}
.coord-value { font-family: var(--font-mono); color: var(--signal-bright); font-size: 0.86rem; }

/* ------------------------------------------------------------- Form fields */
.form-label, .form-group label { color: var(--text-muted); font-size: 0.85rem; font-weight: 500; margin-bottom: 0.35rem; }
.form-control, .form-select {
    background: rgba(5, 9, 16, 0.6);
    border: 1px solid var(--stroke-strong);
    color: var(--text);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.85rem;
    font-family: var(--font-body);
    transition: all 0.18s ease;
}
.form-control::placeholder { color: var(--text-faint); }
.form-control:focus, .form-select:focus {
    background: rgba(5, 9, 16, 0.85);
    border-color: var(--signal);
    box-shadow: 0 0 0 3px var(--signal-dim);
    color: var(--text);
    outline: none;
}
.btn:focus, .btn:active:focus, .form-control:focus, .form-check-input:focus { box-shadow: 0 0 0 3px var(--signal-dim); }

input[type="color"] {
    background: transparent;
    border: 1px solid var(--stroke-strong);
    border-radius: 8px;
    width: 42px; height: 30px;
    padding: 2px;
    cursor: pointer;
}

/* ------------------------------------------------------------ Cesium / map */
.cesium-map-container {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--stroke-strong);
    box-shadow: var(--shadow-glow), var(--shadow-panel);
}
.cesium-container {
    width: 100%;
    height: 58vh;
    min-height: 420px;
    background: #04060b;
}
.map-controls {
    position: absolute;
    /* Anchored to the bottom so it never overlaps Cesium's pin-details
       info box, which renders in the top-right of the map. */
    bottom: 0.9rem; left: 0.9rem; right: 0.9rem;
    z-index: 5;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 0.75rem;
    pointer-events: none;
}
.map-controls > * { pointer-events: auto; }
.map-controls label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.78rem;
    color: var(--text-muted);
    background: rgba(8, 13, 24, 0.75);
    border: 1px solid var(--stroke);
    padding: 0.35rem 0.6rem;
    border-radius: var(--radius-sm);
    backdrop-filter: blur(10px);
}
.view-mode-controls {
    display: inline-flex;
    gap: 0.25rem;
    background: rgba(8, 13, 24, 0.75);
    border: 1px solid var(--stroke);
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    backdrop-filter: blur(10px);
}
.view-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    padding: 0.35rem 0.7rem;
    border-radius: 7px;
    cursor: pointer;
    transition: all 0.16s ease;
}
.view-btn:hover { color: var(--text); }
.view-btn.active {
    color: #04221f;
    background: linear-gradient(135deg, var(--signal-bright), var(--signal));
    box-shadow: 0 0 14px -4px var(--signal-glow);
}

/* --------------------------------------------------------- Results + table */
.results-container {
    background: var(--bg-panel);
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-panel);
    overflow: hidden;
}
.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 1.1rem 1.4rem;
    border-bottom: 1px solid var(--stroke);
}
.results-header h4 { margin: 0; font-size: 1.05rem; letter-spacing: 0.04em; }
.results-stats { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    background: rgba(5, 9, 16, 0.5);
    border: 1px solid var(--stroke);
    padding: 0.4rem 0.75rem;
    border-radius: 999px;
}
.stat-value { font-family: var(--font-mono); color: var(--signal-bright); font-size: 0.9rem; letter-spacing: 0; }
.stat-badge.clickable { cursor: pointer; transition: all 0.16s ease; }
.stat-badge.clickable:hover { border-color: var(--signal); background: var(--signal-dim); }
.active-toggle input[type="checkbox"] { margin: 0; accent-color: var(--signal); cursor: pointer; }

.tower-table th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
.tower-table th.sortable:hover { color: var(--signal-bright); }
.sort-ind { font-size: 0.7em; opacity: 0.9; }

.detail-hero-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: flex-start; }

/* --------------------------------------------- Tower details: map + profile */
.detail-map-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    align-items: stretch;
}
.detail-map-split.single { grid-template-columns: 1fr; }
.detail-map-split > * { height: 58vh; min-height: 460px; }
.detail-map-split .cesium-map-container { margin-bottom: 0; height: 58vh; min-height: 460px; }
/* The canvas must not influence layout height: Cesium sizes its canvas from the
   container, and a content-sized grid row would feed that back as endless growth.
   Absolute positioning pins the canvas inside the fixed-height cell. */
.detail-map-split .cesium-container { position: absolute; inset: 0; width: 100%; height: 100%; min-height: 0; }
@media (max-width: 900px) {
    .detail-map-split { grid-template-columns: 1fr; }
}

.tower-diagram-panel {
    background: #04060b;
    border: 1px solid var(--stroke-strong);
    border-radius: var(--radius);
    box-shadow: var(--shadow-glow), var(--shadow-panel);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.tdiag-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.95rem;
    border-bottom: 1px solid var(--stroke);
}
.tdiag-title {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-faint);
}
.tdiag-type {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--signal-bright);
    text-align: right;
}
.tdiag-svg { flex: 1; width: 100%; min-height: 0; display: block; }
.tdiag-t { font-family: var(--font-mono); font-size: 10.5px; fill: var(--text-faint); letter-spacing: 0.1em; }
.tdiag-v { font-family: var(--font-mono); font-size: 11.5px; fill: var(--signal-bright); letter-spacing: 0.04em; }
.tdiag-struct { stroke: #9cc6f0; stroke-width: 1.4; fill: none; }
.tdiag-wire { stroke: rgba(138, 184, 232, 0.45); stroke-width: 0.8; }
.tdiag-dim { stroke: rgba(93, 114, 143, 0.9); stroke-width: 0.8; }
.tdiag-dash { stroke: rgba(138, 184, 232, 0.32); stroke-width: 0.8; stroke-dasharray: 4 5; fill: none; }
.tdiag-ground { stroke: rgba(138, 184, 232, 0.7); stroke-width: 1.3; }
.tdiag-water-line { stroke: #4aa3ff; stroke-width: 1.2; opacity: 0.8; }
.tdiag-beacon-glow {
    animation: tdiag-pulse 2.2s ease-in-out infinite;
    transform-box: fill-box;
    transform-origin: center;
}
@keyframes tdiag-pulse {
    0%, 100% { opacity: 0.35; transform: scale(1); }
    50% { opacity: 0.9; transform: scale(1.4); }
}

button.stat-badge { font-family: inherit; }

.geocode-candidates { display: flex; flex-direction: column; gap: 0.4rem; }
.geocode-candidate {
    text-align: left;
    font: inherit;
    font-size: 0.85rem;
    color: var(--text);
    background: rgba(5, 9, 16, 0.5);
    border: 1px solid var(--stroke);
    border-radius: 8px;
    padding: 0.45rem 0.7rem;
    cursor: pointer;
    transition: all 0.16s ease;
}
.geocode-candidate:hover { border-color: var(--signal); background: var(--signal-dim); }

.save-search-row { display: flex; gap: 0.5rem; align-items: center; }
.save-label-input { max-width: 340px; }

.saved-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.saved-item { display: inline-flex; align-items: stretch; }
.saved-run {
    font: inherit;
    font-size: 0.85rem;
    color: var(--text);
    background: rgba(5, 9, 16, 0.5);
    border: 1px solid var(--stroke);
    border-radius: 8px 0 0 8px;
    padding: 0.4rem 0.7rem;
    cursor: pointer;
    transition: all 0.16s ease;
}
.saved-run:hover { border-color: var(--signal); background: var(--signal-dim); }
.saved-meta { color: var(--text-muted); font-size: 0.75rem; margin-left: 0.35rem; }
.saved-del {
    font: inherit;
    color: var(--text-muted);
    background: rgba(5, 9, 16, 0.5);
    border: 1px solid var(--stroke);
    border-left: none;
    border-radius: 0 8px 8px 0;
    padding: 0.4rem 0.55rem;
    cursor: pointer;
    transition: all 0.16s ease;
}
.saved-del:hover { color: var(--rose); border-color: var(--rose); }

.table-wrapper { width: 100%; }
.table-scroll { overflow-x: auto; max-height: 62vh; overflow-y: auto; }
.tower-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.tower-table thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: rgba(11, 18, 32, 0.96);
    backdrop-filter: blur(8px);
    color: var(--text-faint);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.68rem;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    text-align: left;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--stroke-strong);
    white-space: nowrap;
}
.tower-table tbody td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid rgba(86, 224, 224, 0.06);
    color: var(--text);
    vertical-align: middle;
}
.tower-table tbody tr { transition: background 0.14s ease; }
.tower-table tbody tr:hover { background: rgba(46, 230, 214, 0.05); }

.asr-number { font-family: var(--font-mono); color: var(--signal-bright); font-weight: 500; }
.asr-link { text-decoration: none; cursor: pointer; transition: color 0.15s ease; }
.asr-link:hover { color: var(--signal); text-decoration: underline; }
.height-value { font-family: var(--font-mono); font-size: 0.85rem; }
.unit, .miles { color: var(--text-faint); font-size: 0.68rem; margin-left: 2px; }
.address-text, .contact-text {
    display: inline-block;
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-muted);
}
.distance-value { font-family: var(--font-mono); color: var(--signal); font-weight: 500; }

/* Structure-type badges */
.structure-badge {
    display: inline-block;
    padding: 0.2rem 0.55rem;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    border: 1px solid transparent;
    white-space: nowrap;
}
.structure-badge.tower  { color: #ff8a6b; background: rgba(255, 87, 51, 0.12);  border-color: rgba(255, 87, 51, 0.35); }
.structure-badge.mtower { color: #6bc8ff; background: rgba(51, 193, 255, 0.12); border-color: rgba(51, 193, 255, 0.35); }
.structure-badge.ltower { color: #7df59a; background: rgba(51, 255, 87, 0.12);  border-color: rgba(51, 255, 87, 0.3); }
.structure-badge.gtower { color: #ff7ac0; background: rgba(255, 51, 168, 0.12); border-color: rgba(255, 51, 168, 0.35); }
.structure-badge.tank   { color: #b388ff; background: rgba(141, 51, 255, 0.12); border-color: rgba(141, 51, 255, 0.35); }
.structure-badge.mast   { color: #ffe07a; background: rgba(255, 214, 51, 0.12); border-color: rgba(255, 214, 51, 0.3); }
.structure-badge.pole   { color: #6bf6f0; background: rgba(51, 255, 243, 0.12); border-color: rgba(51, 255, 243, 0.3); }
.structure-badge.rig    { color: #c98aff; background: rgba(184, 51, 255, 0.12); border-color: rgba(184, 51, 255, 0.35); }
.structure-badge.bant   { color: #ff8a8a; background: rgba(255, 51, 51, 0.12);  border-color: rgba(255, 51, 51, 0.35); }
.structure-badge.other  { color: var(--text-muted); background: rgba(142, 163, 191, 0.1); border-color: var(--stroke); }

/* --------------------------------------------------------------- Admin UI */
.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}
.role-badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 0.2rem 0.55rem;
    border-radius: 6px;
    border: 1px solid var(--stroke);
}
.role-admin { color: var(--amber); background: rgba(255, 180, 84, 0.12); border-color: rgba(255, 180, 84, 0.35); }
.role-user  { color: var(--text-muted); background: rgba(142, 163, 191, 0.1); }

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
}
.status-pill::before {
    content: "";
    width: 7px; height: 7px; border-radius: 50%;
}
.status-active   { color: var(--lime); background: rgba(138, 245, 107, 0.12); border: 1px solid rgba(138, 245, 107, 0.3); }
.status-active::before { background: var(--lime); box-shadow: 0 0 8px var(--lime); }
.status-inactive { color: var(--rose); background: rgba(255, 93, 122, 0.12); border: 1px solid rgba(255, 93, 122, 0.3); }
.status-inactive::before { background: var(--rose); }

.actions-cell { display: flex; gap: 0.4rem; white-space: nowrap; }

/* --------------------------------------------------------------- Modal */
.modal-backdrop-custom {
    position: fixed;
    inset: 0;
    background: rgba(2, 4, 9, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
}
.modal-panel {
    position: fixed;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1001;
    width: min(560px, calc(100vw - 2rem));
    max-height: calc(100vh - 3rem);
    overflow-y: auto;
    background: var(--bg-panel-solid);
    border: 1px solid var(--stroke-strong);
    border-radius: var(--radius);
    padding: 1.6rem;
    box-shadow: var(--shadow-glow), 0 30px 80px -20px rgba(0,0,0,0.9);
    animation: modal-in 0.22s ease;
}
@keyframes modal-in {
    from { opacity: 0; transform: translate(-50%, -46%); }
    to   { opacity: 1; transform: translate(-50%, -50%); }
}
.modal-panel h4 { margin-top: 0; margin-bottom: 1.2rem; letter-spacing: 0.03em; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1rem; display: flex; flex-direction: column; }
.checkbox-group { justify-content: flex-end; }
.checkbox-group label { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--text); }
.modal-actions { display: flex; justify-content: flex-end; gap: 0.7rem; margin-top: 0.6rem; }

/* --------------------------------------------------------------- Login */
.login-layout {
    /* Pinned to the viewport so the pane is dead-centered from the first paint,
       independent of document flow / scroll height during WASM boot. */
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 2rem 1rem;
    overflow-y: auto;
}
.login-wrapper { width: 100%; max-width: 410px; }
.login-card {
    background: var(--bg-panel);
    border: 1px solid var(--stroke-strong);
    border-radius: 22px;
    padding: 2.5rem 2.25rem;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-glow), var(--shadow-panel);
    animation: modal-in 0.3s ease;
}
.login-brand { text-align: center; margin-bottom: 1.8rem; }
.login-logo {
    display: inline-grid;
    place-items: center;
    width: 64px; height: 64px;
    font-size: 1.9rem;
    border-radius: 18px;
    background: var(--signal-dim);
    border: 1px solid var(--stroke-strong);
    box-shadow: 0 0 30px -6px var(--signal-glow);
    margin-bottom: 1rem;
}
.login-brand h1 { font-size: 1.4rem; margin: 0 0 0.3rem; letter-spacing: 0.04em; }
.login-subtitle { color: var(--text-faint); font-size: 0.85rem; margin: 0; }
.login-btn { width: 100%; margin-top: 0.5rem; padding: 0.7rem; }
.login-error {
    background: rgba(255, 93, 122, 0.1);
    border: 1px solid rgba(255, 93, 122, 0.35);
    color: #ff90a6;
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.8rem;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

/* --------------------------------------------------------------- Alerts */
.alert { border-radius: var(--radius-sm); border: 1px solid transparent; padding: 0.75rem 1rem; font-size: 0.88rem; }
.alert-danger { background: rgba(255, 93, 122, 0.1); border-color: rgba(255, 93, 122, 0.32); color: #ff90a6; }
.alert-info   { background: var(--signal-dim); border-color: var(--stroke-strong); color: var(--signal-bright); }

.validation-message, .invalid-feedback { color: #ff90a6; font-size: 0.78rem; margin-top: 0.25rem; }
.valid.modified:not([type=checkbox]) { outline: none; border-color: rgba(138,245,107,0.5); }
.invalid { outline: none; border-color: rgba(255, 93, 122, 0.6) !important; }

/* --------------------------------------------------------- Loading states */
.auth-loading, .app-loading {
    min-height: 60vh;
    display: grid;
    place-content: center;
    text-align: center;
    color: var(--text-muted);
    gap: 1rem;
}
.app-loading { min-height: 100vh; }
.app-loading-pulse { font-size: 3rem; animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse {
    0%, 100% { opacity: 0.4; transform: scale(0.95); filter: drop-shadow(0 0 0 transparent); }
    50% { opacity: 1; transform: scale(1.05); filter: drop-shadow(0 0 18px var(--signal-glow)); }
}
.loading-progress-text { font-family: var(--font-display); letter-spacing: 0.12em; font-size: 0.8rem; text-transform: uppercase; color: var(--text-faint); }

h1:focus { outline: none; }

/* --------------------------------------------------------- Blazor error UI */
#blazor-error-ui {
    background: var(--bg-panel-solid);
    border-top: 1px solid var(--rose);
    color: var(--text);
    bottom: 0;
    box-shadow: 0 -6px 30px -8px rgba(0,0,0,0.8);
    display: none;
    left: 0;
    padding: 0.8rem 1.5rem;
    position: fixed;
    width: 100%;
    z-index: 2000;
    font-size: 0.88rem;
}
#blazor-error-ui .reload { color: var(--signal); }
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 1rem; top: 0.65rem; }

.blazor-error-boundary { background: #b32121; padding: 1rem 1.5rem; color: white; border-radius: var(--radius-sm); }
.blazor-error-boundary::after { content: "An error has occurred."; }

/* --------------------------------------------------------- Scrollbars */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(86, 224, 224, 0.18); border-radius: 10px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: rgba(86, 224, 224, 0.32); background-clip: content-box; }

/* --------------------------------------------------------- Tower detail */
.detail-hero {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    background: var(--bg-panel);
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    padding: 1.5rem 1.75rem;
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-panel);
    margin-bottom: 1.5rem;
}
.detail-eyebrow {
    font-family: var(--font-display);
    font-size: 0.66rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 0.35rem;
}
.detail-asr {
    font-family: var(--font-display);
    font-size: 1.7rem;
    margin: 0 0 0.6rem;
    color: var(--signal-bright);
    letter-spacing: 0.02em;
}
.detail-sub { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; }

.detail-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}
.detail-section {
    background: var(--bg-panel);
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    padding: 1.3rem 1.4rem;
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-panel);
}
.detail-full { margin-bottom: 1.5rem; }
.detail-h {
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    margin: 0 0 1rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--stroke);
    color: var(--text);
}
.detail-grid {
    display: grid;
    grid-template-columns: minmax(120px, max-content) 1fr;
    gap: 0.45rem 1rem;
    margin: 0;
}
.detail-grid dt {
    color: var(--text-faint);
    font-size: 0.78rem;
    letter-spacing: 0.03em;
}
.detail-grid dd {
    margin: 0;
    color: var(--text);
    font-size: 0.88rem;
    word-break: break-word;
}
.detail-empty { color: var(--text-faint); font-size: 0.85rem; font-style: italic; }

.party-card {
    border: 1px solid var(--stroke);
    border-radius: var(--radius-sm);
    padding: 0.9rem 1rem;
    background: rgba(5, 9, 16, 0.4);
    margin-bottom: 0.8rem;
}
.party-card:last-child { margin-bottom: 0; }
.party-name { font-family: var(--font-display); font-weight: 600; color: var(--signal-bright); margin-bottom: 0.15rem; }
.party-person { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.6rem; }

.status-neutral { color: var(--text-muted); background: rgba(142, 163, 191, 0.12); border: 1px solid var(--stroke); }

/* Timeline */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before {
    content: "";
    position: absolute;
    left: 7px; top: 4px; bottom: 4px;
    width: 2px;
    background: var(--stroke-strong);
}
.timeline-item {
    position: relative;
    padding: 0.35rem 0 0.35rem 1.75rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.timeline-item::before {
    content: "";
    position: absolute;
    left: 2px; top: 0.7rem;
    width: 12px; height: 12px;
    border-radius: 50%;
    background: var(--signal);
    box-shadow: 0 0 10px var(--signal-glow);
    border: 2px solid var(--bg-deep);
}
.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--signal);
    min-width: 110px;
}
.timeline-desc { color: var(--text); font-size: 0.88rem; }

/* --------------------------------------------------------- Responsive */
@media (max-width: 820px) {
    .page { flex-direction: column; }

    /* Sidebar becomes a sticky top bar; the menu drops down when expanded. */
    .sidebar {
        width: 100%;
        height: auto;
        position: sticky;
        top: 0;
        z-index: 40;
        flex-direction: column;
    }

    .nav-toggler { display: flex; }

    /* Collapsed = hidden; expanded = a scrollable dropdown panel below the bar. */
    .nav-menu-collapse {
        flex: none;
        max-height: calc(100vh - 62px);
        overflow-y: auto;
        border-bottom: 1px solid var(--stroke);
    }
    .nav-menu-collapse.collapsed { display: none; }

    .nav-scrollable { overflow: visible; }

    .form-row { grid-template-columns: 1fr; }
}