/* Shared TERMINUS visual language for every page except Arena. */
:root {
    --terminus-cyan: #65faff;
    --terminus-orange: #ff7a18;
    --terminus-ink: #02070a;
    --terminus-panel: rgba(2, 10, 14, 0.9);
}

html,
body {
    background-color: var(--terminus-ink);
}

body {
    font-family: "Rajdhani", "Segoe UI", sans-serif;
    color: #c8dcdf;
}

h1,
h2,
h3,
.top-nav a,
.eyebrow,
.section-heading,
dt,
button {
    font-family: "Orbitron", "Arial", sans-serif;
}

h1,
h2,
h3 {
    text-shadow: 0 0 16px color-mix(in srgb, var(--program-color, var(--terminus-cyan)) 34%, transparent);
}

p,
li,
dd {
    font-family: "Rajdhani", "Segoe UI", sans-serif;
}

nav.top-nav {
    position: sticky !important;
    top: 0 !important;
    z-index: 1000;
    display: flex;
    width: 100%;
    min-height: 76px;
    align-items: stretch;
    justify-content: center;
    flex-wrap: nowrap;
    gap: clamp(2px, 0.8vw, 14px);
    margin: 0;
    padding: 0 clamp(16px, 4vw, 66px) !important;
    overflow: visible;
    border: 0;
    border-bottom: 1px solid rgba(101, 250, 255, 0.2);
    background: linear-gradient(180deg, rgba(2, 8, 12, 0.97), rgba(2, 8, 12, 0.88));
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28), inset 0 -1px rgba(255, 122, 24, 0.16);
    backdrop-filter: blur(16px);
    scrollbar-width: none;
    transform: none !important;
    left: auto !important;
}

nav.top-nav::-webkit-scrollbar {
    display: none;
}

nav.top-nav::before {
    position: absolute;
    top: 0;
    bottom: 0;
    left: clamp(16px, 4vw, 66px);
    display: flex;
    align-items: center;
    padding-right: clamp(20px, 3vw, 48px);
    border-right: 1px solid rgba(101, 250, 255, 0.18);
    color: #eef9fa;
    content: "◇  TERMINUS";
    font-family: "Orbitron", "Arial", sans-serif;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.28em;
    white-space: nowrap;
    text-shadow: 0 0 14px rgba(101, 250, 255, 0.32);
}

nav.top-nav a {
    position: relative;
    display: flex;
    flex: 0 0 auto;
    min-height: 76px;
    align-items: center;
    justify-content: center;
    padding: 0 clamp(9px, 1.15vw, 18px);
    border: 0;
    border-bottom: 2px solid transparent;
    background: transparent;
    box-shadow: none;
    color: #9eb1b8;
    font-size: clamp(9px, 0.75vw, 11px);
    font-weight: 600;
    letter-spacing: 0.16em;
    text-decoration: none;
    white-space: nowrap;
    transition: color 180ms ease, border-color 180ms ease, text-shadow 180ms ease;
}

nav.top-nav a:hover,
nav.top-nav a:focus-visible,
nav.top-nav a.active {
    border-bottom-color: var(--terminus-orange);
    background: linear-gradient(180deg, transparent 55%, rgba(255, 122, 24, 0.07));
    box-shadow: 0 8px 14px -12px var(--terminus-orange);
    color: #fff;
    text-shadow: 0 0 12px rgba(101, 250, 255, 0.48);
    outline: none;
}

nav.top-nav a:focus-visible {
    outline: 2px solid var(--terminus-cyan);
    outline-offset: -5px;
}

/* Command Center is a nested navigation group, with PRIME and VALOR pages inside. */
nav.top-nav > details.nav-command-group {
    position: relative;
    display: flex;
    flex: 0 0 auto;
    align-items: stretch;
}

nav.top-nav > details.nav-command-group > summary {
    position: relative;
    display: flex;
    min-height: 76px;
    align-items: center;
    padding: 0 clamp(9px, 1.15vw, 18px);
    border-bottom: 2px solid transparent;
    color: #9eb1b8;
    cursor: pointer;
    font-family: "Orbitron", "Arial", sans-serif;
    font-size: clamp(9px, 0.75vw, 11px);
    font-weight: 600;
    letter-spacing: 0.16em;
    list-style: none;
    white-space: nowrap;
    transition: color 180ms ease, border-color 180ms ease, text-shadow 180ms ease;
}

nav.top-nav > details.nav-command-group > summary::-webkit-details-marker {
    display: none;
}

nav.top-nav > details.nav-command-group > summary::after {
    width: 6px;
    height: 6px;
    margin: -3px 0 0 10px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    content: "";
    transform: rotate(45deg);
    transition: transform 180ms ease;
}

nav.top-nav > details.nav-command-group[open] > summary::after {
    margin-top: 3px;
    transform: rotate(225deg);
}

nav.top-nav > details.nav-command-group > summary:hover,
nav.top-nav > details.nav-command-group > summary:focus-visible,
nav.top-nav > details.nav-command-group > summary.active {
    border-bottom-color: var(--terminus-orange);
    background: linear-gradient(180deg, transparent 55%, rgba(255, 122, 24, 0.07));
    color: #fff;
    text-shadow: 0 0 12px rgba(101, 250, 255, 0.48);
    outline: none;
}

nav.top-nav > details.nav-command-group > summary:focus-visible {
    outline: 2px solid var(--terminus-cyan);
    outline-offset: -5px;
}

nav.top-nav .nav-command-menu {
    position: absolute;
    z-index: 1300;
    top: 100%;
    left: 50%;
    display: grid;
    min-width: max-content;
    padding: 5px;
    border: 1px solid rgba(101, 250, 255, 0.38);
    background: rgba(2, 8, 12, 0.98);
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.55), 0 0 18px rgba(101, 250, 255, 0.11);
    transform: translateX(-50%);
}

nav.top-nav .nav-command-menu a {
    min-height: 0;
    justify-content: flex-start;
    padding: 13px 16px;
    border: 0;
    border-bottom: 1px solid rgba(101, 250, 255, 0.12);
    font-size: 10px;
    letter-spacing: 0.12em;
}

nav.top-nav .nav-command-menu a:last-child {
    border-bottom: 0;
}

/* Give page-level music controls the centered, visible placement used on Programs. */
.audio-control {
    position: relative !important;
    z-index: 10;
    display: flex;
    width: 100%;
    justify-content: center;
    margin: 14px auto 0;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    transform: none;
}

.audio-control .archive-music-toggle {
    padding-inline: 16px;
}

.hero-content .music-toggle {
    display: flex;
    width: max-content;
    margin-inline: auto;
}

nav.top-nav a.active::after {
    position: absolute;
    right: 24%;
    bottom: -2px;
    left: 24%;
    height: 2px;
    background: var(--terminus-orange);
    box-shadow: 0 0 12px rgba(255, 122, 24, 0.78);
    content: "";
}

/* Existing page panels keep their own color stories, with a shared crisp edge. */
:is(
    .hero,
    .about-hero,
    .origin-panel,
    .realm-principles,
    .realm-sectors,
    .pillar-card,
    .keeper-card,
    .conclusion-panel,
    .command-hero,
    .control-panel,
    .map-hero,
    .chart-panel,
    .location-dossier,
    .archives-hero,
    .records-shell,
    .record-detail,
    .program-console,
    .program-record,
    .watchtower-hero,
    .defense-banner,
    .system-block
) {
    border-radius: 0;
    border-color: color-mix(in srgb, var(--program-color, var(--terminus-cyan)) 48%, rgba(255, 122, 24, 0.18));
    box-shadow:
        0 14px 36px rgba(0, 0, 0, 0.24),
        inset 0 1px rgba(255, 255, 255, 0.045),
        inset 0 -1px rgba(255, 122, 24, 0.16);
}

:is(.pillar-card, .keeper-card, .control-panel, .system-block, .record-detail, .location-dossier) {
    background-color: var(--terminus-panel);
}

main > header,
main > section {
    scroll-margin-top: 88px;
}

/* These pages used fixed navigation and large compensating top padding. */
.about-page,
.command-page,
.program-page {
    padding-top: clamp(30px, 4vw, 58px) !important;
}

@media (max-width: 760px) {
    nav.top-nav {
        min-height: 62px;
        justify-content: center;
        flex-wrap: wrap;
        padding-inline: 10px !important;
        gap: 0;
        overflow: visible;
    }

    nav.top-nav::before {
        display: none;
    }

    nav.top-nav a {
        min-height: 62px;
        padding-inline: 12px;
        font-size: 9px;
        letter-spacing: 0.1em;
    }

    nav.top-nav > details.nav-command-group > summary {
        min-height: 62px;
        padding-inline: 12px;
        font-size: 9px;
        letter-spacing: 0.1em;
    }

    nav.top-nav .nav-command-menu {
        left: 0;
        transform: none;
    }

    .about-page,
    .command-page,
    .program-page {
        padding-top: 28px !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    nav.top-nav a,
    nav.top-nav > details.nav-command-group > summary {
        transition: none;
    }
}