/* ====================== TEMEL TEMA ====================== */
:root {
    --bg: #000;
    --fg: #fff;
    --ring-track: rgba(255,255,255,0.18);
    --ring-fill: #ffffff;
    --ring-fill-done: #B5D4B1; /* %100 olduğunda */
    --ring-size: 120px;
    --ring-stroke: 8px;
}

/* Reset */
html, body {
    height: 100%;
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Loader katmanı */
#loader {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    background: var(--bg);
    z-index: 10;
    overflow: hidden;
    transition: opacity 0.2s ease;
}

/* Arka plan video */
#loader-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.9;
    pointer-events: none;
    z-index: 1;
}

/* Ortadaki UI */
#loader-ui {
    position: relative;
    z-index: 2; /* videonun üstünde */
    display: grid;
    place-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-radius: 14px;
}

/* Halka */
.ring-wrap {
    width: var(--ring-size);
    height: var(--ring-size);
}

.ring {
    display: block;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.ring-track {
    fill: none;
    stroke: var(--ring-track);
    stroke-width: var(--ring-stroke);
    stroke-linecap: round;
}

.ring-progress {
    fill: none;
    stroke: var(--ring-fill);
    stroke-width: var(--ring-stroke);
    stroke-linecap: round;
    transition: stroke-dashoffset 0.25s ease, stroke 0.25s ease; /* renge de animasyon */
}
    /* %100 olduğunda yeşile döndür */
    .ring-progress.done {
        stroke: var(--ring-fill-done);
    }

/* Başlık */
.loader-caption {
    color: var(--fg);
    font-size: clamp(14px, 2.8vw, 18px);
    letter-spacing: 0.2px;
    text-align: center;
    opacity: 0.9;
}

/* Unity canvas (loader kapanınca görünür) */
#unity-canvas {
    display: none;
    background: transparent;
    outline: none;
}

/* Hareketi azalt tercihi */
@media (prefers-reduced-motion: reduce) {
    .ring-progress {
        transition: none;
    }

    #loader-video {
        opacity: 0.6;
    }
}