/*
 * ============================================================
 * 04 — BACKGROUND
 * Glow + judančios įstrižos linijos
 * ============================================================
 */

.spinsgems-background {
    position: relative;
    background-color: #050d1f;
    min-height: 100vh;
    overflow: hidden;
}

/* Glow sluoksnis */
.spinsgems-background::before {
    content: "";
    position: fixed;
    top: 0; left: 0;
    width: 120%; height: 120%;
    background:
        radial-gradient(ellipse at 28% 28%, rgba(37, 99, 235, 0.14) 0%, transparent 52%),
        radial-gradient(ellipse at 72% 62%, rgba(96, 165, 250, 0.09) 0%, transparent 48%),
        radial-gradient(ellipse at 50%  6%, rgba(59, 130, 246, 0.07) 0%, transparent 44%);
    z-index: 0;
    pointer-events: none;
    filter: blur(55px);
    animation: sgFloatGlow 70s ease-in-out infinite alternate;
}

/* Linijų sluoksnis — judantis per transform */
.spinsgems-background::after {
    content: "";
    position: fixed;
    /* Padidintas plotas kad judant nebūtų tarpai kraštuose */
    top: -30%; left: -30%;
    width: 160%; height: 160%;
    z-index: 0;
    pointer-events: none;
    background-image:
        repeating-linear-gradient(
            -15deg,
            transparent 0px,
            transparent 50px,
            rgba(37, 99, 235, 0.09) 50px,
            rgba(37, 99, 235, 0.09) 52px
        ),
        repeating-linear-gradient(
            -15deg,
            transparent 0px,
            transparent 105px,
            rgba(96, 165, 250, 0.06) 105px,
            rgba(96, 165, 250, 0.06) 107px
        );
    animation: sgLinesDrift 45s linear infinite;
    will-change: transform;
}

.spinsgems-background > * {
    position: relative;
    z-index: 1;
    color: #fff;
}

@keyframes sgFloatGlow {
    0%   { transform: translate(-5%, -5%) scale(1);    }
    25%  { transform: translate(2%, -3%)  scale(1.04); }
    50%  { transform: translate(4%, 2%)   scale(1.07); }
    75%  { transform: translate(0%, 4%)   scale(1.02); }
    100% { transform: translate(-5%, -5%) scale(1);    }
}

/* Transform animacija — garantuotai judanti */
@keyframes sgLinesDrift {
    from { transform: translate(0px, 0px); }
    to   { transform: translate(260px, 130px); }
}