/* BIOS: okvir i raspored ploce, prefiks .bios-. */
/* ===== OVERLAY ===== */

.bios-overlay {
    --bios-bg: #0000aa;
    --bios-bg-tamno: #000077;
    --bios-panel: #0000cc;
    --bios-panel-ivica: #9badff;
    --bios-tekst: #e8e8ff;
    --bios-tekst-siv: #9aa5c9;
    --bios-zuti: #ffd400;
    --bios-naziv: #ffffff;
    --bios-kbd-bg: rgba(0, 0, 0, .35);
    --bios-kbd-tekst: #ffd400;
    --bios-kbd-ivica: #9badff;
    --bios-izabrano-bg: #dfe6ff;
    --bios-izabrano-tekst: #00006e;
    --bios-crveni: #ff5c5c;
    --bios-zeleni: #7dff8a;

    position: fixed;
    inset: 0;
    z-index: 100;
    background: var(--bios-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;

    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.45;
    color: var(--bios-tekst);

    box-shadow: inset 0 0 140px rgba(0, 0, 0, .38);
}

.bios-overlay[hidden],
.bios-boot[hidden],
.bios-ui[hidden],
.bios-dialog[hidden],
.bios-side[hidden] {
    display: none !important;
}

.bios-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 5;
    pointer-events: none;
    background: repeating-linear-gradient(
        rgba(0, 0, 0, .25) 0,
        rgba(0, 0, 0, .25) 1px,
        transparent 1px,
        transparent 3px
    );
}

.bios-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 6;
    pointer-events: none;
    background: radial-gradient(ellipse at center, transparent 58%, rgba(0, 0, 0, .32) 100%);
}

body.bios-otvoren {
    overflow: hidden;
}

.bios-overlay ::selection {
    background: var(--bios-zuti);
    color: var(--bios-izabrano-tekst);
}

/* ===== BOOT EKRAN ===== */
.bios-boot {
    --bios-tekst: var(--gx-boot-tekst, #e8e8ff);
    --bios-tekst-siv: var(--gx-boot-tekst-siv, #9aa5c9);
    --bios-zuti: var(--gx-boot-zuti, #ffd400);
    --bios-zeleni: var(--gx-boot-zeleni, #7dff8a);

    position: absolute;
    inset: 0;
    z-index: 4;
    background: #000;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 7vh 8vw;
    color: var(--bios-tekst);
}

.bios-boot-logo {
    font-size: clamp(22px, 4vw, 36px);
    font-weight: 700;
    letter-spacing: 8px;
    color: #fff6cf;
    text-shadow: 0 0 14px rgba(255, 212, 0, .55);
    margin-bottom: 28px;
    white-space: nowrap;
}

.bios-boot-log {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 14px;
    white-space: pre;
    overflow: hidden;
}

.bios-boot-red {
    color: var(--bios-tekst);
    animation: bios-red-pojavljivanje .3s ease-out;
}

.bios-boot-red.bios-ok,
.bios-boot-red .bios-ok {
    color: var(--bios-zeleni);
}

.bios-mem-broj {
    color: var(--bios-tekst);
    font-variant-numeric: tabular-nums;
}

.bios-status-spreman {
    color: var(--bios-zuti);
}

.bios-status-zakljucano {
    color: var(--bios-tekst-siv);
}

.bios-boot-prazno {
    min-height: 1em;
}

.bios-boot-skip {
    margin-top: auto;
    color: var(--bios-tekst-siv);
    font-size: 12px;
    letter-spacing: 1px;
    animation: bios-treperenje 1.1s steps(2, start) infinite;
}

/* ===== BIOS UI ===== */
.bios-ui {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 16px 18px 14px;
    gap: 12px;
    background: var(--bios-bg);
    border-radius: 8px;
    animation: bios-ui-pojavljivanje .45s ease-out;
    min-height: 0;
}

/* ===== ZAGLAVLJE ===== */
.bios-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;

    background: var(--bios-bg-tamno);
    border-bottom: 3px double var(--bios-panel-ivica);
    user-select: none;
}

.bios-header-levo {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.bios-naziv {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--bios-naziv);
    white-space: nowrap;

    text-shadow: none;
}

.bios-verzija {
    color: var(--bios-zuti);
    font-weight: 500;
    font-size: 13px;
    margin-left: 6px;
}

.bios-podnaziv {
    display: block;
    font-size: 11px;
    color: var(--bios-tekst-siv);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bios-header-desno {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 12px;
    white-space: nowrap;
}

.bios-mem {
    color: var(--bios-tekst-siv);
    letter-spacing: .5px;
}

.bios-sat {
    color: var(--bios-zuti);
    font-variant-numeric: tabular-nums;
    letter-spacing: 1px;
    font-weight: 500;
}

/* ===== NAVIGACIJA ===== */
.bios-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    user-select: none;
}

.bios-nav-dugme {
    background: transparent;
    border: 1px solid transparent;
    color: var(--bios-tekst);
    font: inherit;
    font-size: 13px;
    padding: 7px 14px;
    cursor: pointer;
    letter-spacing: .5px;
    white-space: nowrap;
}

.bios-nav-dugme:hover {
    color: var(--bios-zuti);
}

.bios-nav-dugme.aktivan {
    background: var(--bios-izabrano-bg);
    color: var(--bios-izabrano-tekst);
    font-weight: 700;
    border-color: var(--bios-panel-ivica);
}