:root {
    --font-mono: "SFMono-Regular", "JetBrains Mono", "Roboto Mono", "Courier New", monospace;
    --sa-top:    env(safe-area-inset-top, 0px);
    --sa-right:  env(safe-area-inset-right, 0px);
    --sa-bottom: env(safe-area-inset-bottom, 0px);
    --sa-left:   env(safe-area-inset-left, 0px);
    --hud-blur: 16px;
}

/* ==========================================================================
   STARLINK CONSTELLATION — live Starlink tracker
   ========================================================================== */

body[data-page-id="starlink-constellation"] {
    overflow: hidden;
    -webkit-tap-highlight-color: transparent;
}

#cesium-container {
    position: fixed;
    inset: 0;
    z-index: 0;
    touch-action: none;
}

#cesium-container .cesium-widget-credits { display: none !important; }
#cesium-container .cesium-viewer-toolbar,
#cesium-container .cesium-viewer-animationContainer,
#cesium-container .cesium-viewer-timelineContainer,
#cesium-container .cesium-viewer-bottom { display: none !important; }

/* Shared HUD card */
.orbital-hud {
    position: fixed;
    z-index: 15;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 1.4px;
    color: rgba(200, 240, 255, 0.95);
    background: linear-gradient(145deg, rgba(0, 12, 24, 0.92) 0%, rgba(0, 25, 45, 0.88) 100%);
    border: 1px solid rgba(0, 210, 255, 0.45);
    border-radius: 8px;
    padding: 18px 22px;
    backdrop-filter: blur(var(--hud-blur));
    min-width: 210px;
    box-shadow:
        0 0 30px rgba(0, 210, 255, 0.08),
        0 4px 24px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    user-select: none;
    -webkit-user-select: none;
}

.orbital-hud input,
.orbital-hud textarea,
.orbital-hud .hud-val {
    user-select: text;
    -webkit-user-select: text;
}

/* Stats HUD — cyan accent */
#stats-hud {
    top: calc(90px + var(--sa-top));
    left: calc(24px + var(--sa-left));
    border-color: rgba(0, 204, 255, 0.55);
    box-shadow:
        0 0 30px rgba(0, 204, 255, 0.12),
        0 4px 24px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.hud-title {
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: rgba(0, 210, 255, 0.6);
    border-bottom: 1px solid rgba(0, 210, 255, 0.2);
    padding-bottom: 8px;
    margin-bottom: 12px;
}

#stats-hud .hud-title {
    color: rgba(0, 204, 255, 0.75);
    border-color: rgba(0, 204, 255, 0.2);
}

.hud-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    margin-bottom: 6px;
}

.hud-label {
    color: rgba(200, 240, 255, 0.45);
    font-size: 0.62rem;
    letter-spacing: 1.5px;
}

.hud-val {
    color: #ffffff;
    font-size: 0.78rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

.hud-live {
    margin-top: 12px;
    padding-top: 8px;
    border-top: 1px solid rgba(0, 204, 255, 0.2);
    color: #00ccff;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 2px;
    animation: tv-signal-blink 1.6s infinite;
}

@keyframes tv-signal-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Bottom satellite count bar */
.orbital-sat-bar {
    position: fixed;
    bottom: calc(24px + var(--sa-bottom));
    left: 50%;
    transform: translateX(-50%);
    z-index: 15;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: rgba(200, 240, 255, 0.7);
    background: rgba(0, 12, 24, 0.82);
    border: 1px solid rgba(0, 210, 255, 0.3);
    border-radius: 20px;
    padding: 8px 20px;
    backdrop-filter: blur(12px);
    white-space: nowrap;
    box-shadow: 0 0 20px rgba(0, 210, 255, 0.06);
}

.orbital-sat-bar span {
    color: #00ccff;
    font-weight: 700;
}

/* Signal Key toggle button */
.key-hud-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: inherit;
    font-family: inherit;
    font-size: inherit;
    letter-spacing: inherit;
    width: 100%;
    text-align: left;
}

.key-hud-toggle-arrow {
    font-size: 0.55rem;
    color: rgba(0, 210, 255, 0.6);
    transition: transform 0.2s ease;
    display: inline-block;
}

.key-hud-body { margin-top: 12px; }

.key-hud--collapsed { min-width: 0; }

#stats-hud .key-hud-toggle-arrow { color: rgba(0, 204, 255, 0.75); }

/* Density panel — top right */
#density-hud {
    top: calc(90px + var(--sa-top));
    right: calc(24px + var(--sa-right));
    min-width: 0;
}

#density-hud .hud-title { color: rgba(0, 204, 255, 0.75); }
#density-hud .key-hud-toggle-arrow { color: rgba(0, 204, 255, 0.75); }

/* Starlink slider styles */
.sl-slider-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 4px 0 4px;
}

.sl-label-min,
.sl-label-max {
    white-space: nowrap;
    font-size: 0.58rem;
    color: rgba(200, 240, 255, 0.4);
    letter-spacing: 1px;
    min-width: 24px;
}

.sl-label-max { text-align: right; }

.sl-slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: rgba(0, 210, 255, 0.2);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.sl-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 28px;
    height: 28px;
    background-clip: content-box;
    border: 9px solid transparent;
    border-radius: 50%;
    background: #00ccff;
    box-shadow: 0 0 6px rgba(0, 204, 255, 0.6);
    cursor: pointer;
}

.sl-slider::-moz-range-thumb {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: #00ccff;
    box-shadow: 0 0 6px rgba(0, 204, 255, 0.6);
    cursor: pointer;
}

.sl-slider-val {
    font-size: 0.6rem;
    color: rgba(200, 240, 255, 0.5);
    letter-spacing: 1.5px;
    text-align: center;
}

.sl-slider-val span {
    color: #00ccff;
    font-weight: 700;
}

.sl-fetch-all-btn {
    width: 100%;
    margin-top: 10px;
    padding: 7px 10px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: #001018;
    background: linear-gradient(135deg, #00ccff 0%, #00a0dd 100%);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: filter 0.15s, transform 0.1s;
}
@media (hover: hover) {
    .sl-fetch-all-btn:hover { filter: brightness(1.15); }
}
.sl-fetch-all-btn:active { transform: scale(0.98); }
.sl-fetch-all-btn:disabled {
    opacity: 0.55;
    cursor: progress;
    background: rgba(0, 204, 255, 0.3);
    color: rgba(255, 255, 255, 0.7);
}
.sl-fetch-all-btn.is-loaded {
    background: rgba(0, 204, 255, 0.12);
    color: rgba(0, 204, 255, 0.85);
    border: 1px solid rgba(0, 204, 255, 0.4);
    cursor: default;
}
.sl-fetch-hint {
    margin-top: 6px;
    font-size: 0.52rem;
    letter-spacing: 1px;
    color: rgba(200, 240, 255, 0.35);
    text-align: center;
}

/* Time-warp controls */
.time-warp {
    bottom: calc(72px + var(--sa-bottom));
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    min-width: 0;
}
.tw-label {
    font-size: 0.58rem;
    letter-spacing: 2px;
    color: rgba(0, 210, 255, 0.6);
    font-weight: 700;
}
.tw-btns { display: flex; gap: 4px; }
.tw-btn {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    min-width: 38px;
    padding: 5px 8px;
    background: rgba(0, 210, 255, 0.08);
    color: rgba(200, 240, 255, 0.7);
    border: 1px solid rgba(0, 210, 255, 0.25);
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}
@media (hover: hover) {
    .tw-btn:hover { background: rgba(0, 210, 255, 0.2); color: #fff; }
}
.tw-btn--active {
    background: rgba(0, 210, 255, 0.85);
    color: #001018;
    box-shadow: 0 0 12px rgba(0, 210, 255, 0.45);
}

/* Satellite inspector card */
.sat-detail {
    bottom: calc(120px + var(--sa-bottom));
    right: calc(24px + var(--sa-right));
    min-width: 210px;
    max-width: 250px;
    z-index: 16;
}
.sat-detail-close {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 20px;
    height: 20px;
    line-height: 1;
    background: none;
    border: none;
    color: rgba(200, 240, 255, 0.5);
    font-size: 0.8rem;
    cursor: pointer;
    transition: color 0.15s;
}
@media (hover: hover) {
    .sat-detail-close:hover { color: #00d2ff; }
}
.sat-detail .hud-title { color: rgba(0, 210, 255, 0.85); padding-right: 24px; }

/* Neutral topbar + footer */
.orbital-topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 16px;
    padding:
        calc(12px + var(--sa-top))
        calc(20px + var(--sa-right))
        12px
        calc(20px + var(--sa-left));
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 2px;
    background: linear-gradient(180deg, rgba(0, 8, 16, 0.7) 0%, transparent 100%);
    pointer-events: none;
}
.orbital-brand, .orbital-wordmark {
    color: rgba(200, 240, 255, 0.9);
    text-decoration: none;
    pointer-events: auto;
}
@media (hover: hover) {
    .orbital-brand:hover { color: #00d2ff; }
}
.orbital-wordmark { font-weight: 700; letter-spacing: 3px; }

.orbital-footer {
    position: fixed;
    bottom: calc(8px + var(--sa-bottom));
    right: calc(16px + var(--sa-right));
    z-index: 20;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0 6px;
    max-width: min(72vw, 640px);
    font-family: var(--font-mono);
    font-size: 0.58rem;
    letter-spacing: 1px;
    color: rgba(160, 200, 230, 0.55);
    pointer-events: none;
}

.orbital-footer span + span::before {
    content: "· ";
    color: rgba(160, 200, 230, 0.35);
}

.orbital-footer__cite {
    color: rgba(160, 200, 230, 0.7);
}

/* Focus */
.orbital-hud button:focus-visible,
.orbital-hud input:focus-visible,
.orbital-hud a:focus-visible,
.tw-btn:focus-visible {
    outline: 2px solid rgba(0, 210, 255, 0.95);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ==========================================================================
   MOBILE
   ========================================================================== */

@media (max-width: 600px) {
    :root { --hud-blur: 8px; }

    #stats-hud {
        top: calc(76px + var(--sa-top));
        left: calc(12px + var(--sa-left));
    }
    #density-hud {
        top: calc(76px + var(--sa-top));
        right: calc(12px + var(--sa-right));
    }
    #density-hud:not(.key-hud--collapsed) {
        max-width: min(74vw, 280px);
        z-index: 18;
    }

    .orbital-sat-bar { font-size: 0.58rem; }

    .time-warp { bottom: calc(60px + var(--sa-bottom)); }

    .sat-detail {
        left: calc(12px + var(--sa-left));
        right: calc(12px + var(--sa-right));
        bottom: calc(100px + var(--sa-bottom));
        max-width: none;
    }

    .orbital-hud {
        font-size: 0.64rem;
        padding: 12px 16px;
        min-width: 0;
    }

    .tw-btn,
    .sl-fetch-all-btn {
        min-height: 44px;
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .sat-detail-close {
        width: 44px;
        height: 44px;
        top: 4px;
        right: 4px;
        font-size: 1.1rem;
    }

    .key-hud-toggle { min-height: 44px; }

    .hud-label,
    .orbital-footer {
        font-size: max(0.68rem, 11px);
    }
    .hud-val { font-size: max(0.8rem, 13px); }
    .hud-title { font-size: max(0.75rem, 12px); }
    .key-hud-toggle-arrow { font-size: max(0.7rem, 11px); }
    .sl-label-min,
    .sl-label-max,
    .sl-count,
    .tw-label,
    .tw-btn {
        font-size: max(0.68rem, 11px);
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    #stats-hud,
    #density-hud {
        top: calc(56px + var(--sa-top));
        max-height: calc(100vh - 56px - 56px - var(--sa-top) - var(--sa-bottom));
        overflow-y: auto;
    }
    .orbital-sat-bar { display: none; }
    .orbital-hud { padding: 10px 14px; }
}

@media (max-width: 480px) {
    .orbital-hud {
        font-size: 0.58rem;
        padding: 8px 10px;
    }
}