/* ========================================
   SPLASH_CIRCLE.CSS - Circular Splash derived from splash2
   All colors inherit from --primary-accent (change once)
   Circular mud-wasm-cont with conic progress ring (0..1 via --progress)
   ======================================== */

/* Registered so the ring fills smoothly between loader.js updates */
@property --progress {
    syntax: "<number>";
    inherits: true;
    initial-value: 0;
}

body.splash-page:has(.mud-wasm-cont) {
    --primary-accent: var(--brand-primary);
    --primary-glow: color-mix(in srgb, var(--primary-accent) 55%, white 45%);
    --primary-dark: color-mix(in srgb, var(--primary-accent) 65%, black 35%);
    --primary-light: color-mix(in srgb, var(--primary-accent) 85%, white 15%);
    --accent-alpha-20: color-mix(in srgb, var(--primary-accent) 20%, transparent 80%);
    --accent-alpha-40: color-mix(in srgb, var(--primary-accent) 40%, transparent 60%);
    --accent-alpha-60: color-mix(in srgb, var(--primary-accent) 60%, transparent 40%);
    --text-primary: #ffffff;
    background: linear-gradient(135deg, color-mix(in srgb, var(--primary-accent) 80%, #1b1f3b) 0%, color-mix(in srgb, var(--primary-accent) 60%, #111) 50%, color-mix(in srgb, var(--primary-accent) 70%, #020b17) 100%);
    background-size: 400% 400%;
    animation: gradientFlow 18s ease infinite;
    min-height: 100vh;
    overflow: hidden;
}

@keyframes gradientFlow {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Montserrat", "Roboto", system-ui, -apple-system, sans-serif;
}

#app {
    min-height: 100vh;
}

/* Circular container derived from splash2 glass effects */
.mud-wasm-cont {
    --circle-size: clamp(280px, 50vmin, 420px);
    --ring-thickness: 6px; /* Larger progress ring */
    --ring-inset: 6px; /* Bigger ring: closer to circle edge */
    --ring-gap: 14px; /* Distance between logo edge and ring inner edge */
    --logo-inner-gap: 60px; /* Desktop: much smaller logo */
    --logo-mid-margin: 120px; /* Desktop: keep logo clearly smaller than middle disc */
    --ring-size: calc(var(--circle-size) - (var(--ring-inset) * 2));
    --logo-size: calc(var(--ring-size) - ((var(--ring-thickness) + var(--ring-gap) + var(--logo-inner-gap)) * 2));
    --mid-disc-size: calc(var(--ring-size) - (var(--ring-thickness) * 2));
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: var(--circle-size);
    height: var(--circle-size);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin: 0;
    /* glassy layered background */
    background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02)), radial-gradient(circle at 50% 40%, color-mix(in srgb, var(--primary-accent) 85%, white 15%) 0%, color-mix(in srgb, var(--primary-accent) 70%, #1b1f3b 30%) 60%, color-mix(in srgb, var(--primary-accent) 55%, #111 45%) 100%);
    background-blend-mode: overlay, normal;
    backdrop-filter: blur(22px) saturate(200%);
    -webkit-backdrop-filter: blur(22px) saturate(200%);
    border: 1px solid rgba(255,255,255,0.12);
    box-shadow:
    /* soft ambient shadow */
    0 10px 30px rgba(0, 0, 0, 0.14),
    /* deeper projection onto the page */
    0 28px 60px rgba(3,10,20,0.30), inset 0 1px 0 rgba(255,255,255,0.04);
    isolation: isolate;
    transition: --progress 0.4s ease-out;
    animation: boxFloat 5s ease-in-out infinite;
}

@keyframes boxFloat {
    0%, 100% { transform: translate(-50%, -50%); }
    50% { transform: translate(-50%, calc(-50% - 6px)); }
}

    /* Middle disc: bigger than logo, smaller than ring and parent */
    .mud-wasm-cont::after {
        content: "";
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        width: var(--mid-disc-size);
        height: var(--mid-disc-size);
        border-radius: 50%;
        background:
            radial-gradient(circle at 30% 20%, rgba(255,255,255,0.16) 0%, transparent 55%),
            radial-gradient(
            circle at 45% 35%,
            color-mix(in srgb, var(--primary-accent) 82%, white 18%) 0%,
            color-mix(in srgb, var(--primary-accent) 70%, black 30%) 72%,
            color-mix(in srgb, var(--primary-accent) 62%, black 38%) 100%
        );
        pointer-events: none;
        z-index: 0;
        box-shadow:
            inset 0 1px 0 rgba(255,255,255,0.24),
            inset 0 -10px 20px rgba(0,0,0,0.18);
        opacity: 0.95;
    }

    /* Circular progress ring wraps the logo, not the container */
    .mud-wasm-cont::before {
        /* Progress ring placed around the splash-logo outer radius (uses --logo-size)
       positioned centered in the container */
        content: "";
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        /* Ring size is fixed relative to circle, independent from logo size */
        width: var(--ring-size);
        height: var(--ring-size);
        border-radius: 50%;
        /* bright head travels with the fill */
        background: conic-gradient(from -90deg, var(--primary-dark) 0turn, var(--primary-light) calc(var(--progress, 0) * 1turn - 0.04turn), var(--primary-glow) calc(var(--progress, 0) * 1turn), var(--accent-alpha-20) calc(var(--progress, 0) * 1turn) 1turn);
        /* Build a fixed-thickness donut from ring-size so ring never shrinks with logo */
        -webkit-mask: radial-gradient(circle at center,
            transparent calc((var(--ring-size) / 2) - var(--ring-thickness)),
            black calc((var(--ring-size) / 2) - var(--ring-thickness) + 1px),
            black calc(var(--ring-size) / 2),
            transparent calc((var(--ring-size) / 2) + 1px)
        );
        mask: radial-gradient(circle at center,
            transparent calc((var(--ring-size) / 2) - var(--ring-thickness)),
            black calc((var(--ring-size) / 2) - var(--ring-thickness) + 1px),
            black calc(var(--ring-size) / 2),
            transparent calc((var(--ring-size) / 2) + 1px)
        );
        /* box-shadow would be clipped by the mask, so glow with a filter */
        filter: drop-shadow(0 0 6px var(--accent-alpha-60));
        pointer-events: none;
        z-index: 1; /* above middle disc, below logo (logo z-index:2) */
    }

/* hide logo-tied pseudo previously used */
.splash-logo::after {
    display: none;
}

/* Circular logo fits inside with proper spacing from border ring */
.splash-logo {
    width: var(--logo-size);
    height: var(--logo-size);
    max-width: calc(var(--mid-disc-size) - var(--logo-mid-margin));
    max-height: calc(var(--mid-disc-size) - var(--logo-mid-margin));
    box-sizing: border-box;
    border-radius: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    box-shadow: none;
    padding: 0;
    object-fit: contain;
    animation: logoBreath 3.2s ease-in-out infinite;
    filter: drop-shadow(0 6px 14px rgba(0,0,0,0.25));
    z-index: 2;
    position: relative;
    overflow: visible;
}

@keyframes logoBreath {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.04); }
}

    /* Ensure <img> scales nicely */
    .splash-logo[src], .splash-logo img {
        width: 100%;
        height: 100%;
        border-radius: 0;
        object-fit: contain;
        position: relative;
        z-index: 1;
    }

/* Percentage sits just outside circle */
.loader-percent {
    position: absolute;
    bottom: -46px;
    left: 50%;
    transform: translateX(-50%);
    margin: 0;
    padding: 4px 14px;
    border-radius: 999px; /* pill badge */
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(255,255,255,0.14);
    color: var(--text-primary);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    font-size: clamp(14px, 2.8vmin, 18px);
    text-shadow: 0 2px 12px rgba(0,0,0,0.35);
    animation: percentFade 2s ease-in-out infinite;
}

@keyframes percentFade {
    0%, 100% {
        opacity: 0.85;
    }

    50% {
        opacity: 1;
    }
}

/* Hide legacy bar */
.loader-progress,
.loader-bar {
    display: none !important;
}

@media (max-width: 540px) {
    .mud-wasm-cont {
        --circle-size: 220px;
        --ring-thickness: 5px; /* Slightly larger ring on mobile */
        --ring-inset: 6px;
        --logo-inner-gap: 20px;
        --logo-mid-margin: 52px;
    }

    .loader-percent {
        bottom: -38px;
        font-size: clamp(12px, 3.4vmin, 15px);
    }
}

@media (prefers-reduced-motion: reduce) {
    .mud-wasm-cont,
    .splash-logo,
    .loader-percent {
        animation: none;
        transition: none;
    }
}

/* ==========================================================================
   LEGACY BROWSERS (Windows 7: Chrome/Edge 109 lack color-mix(), Firefox 115 lacks :has())
   The theme rule above resolves to invalid colors there and the splash has no background.
   Plain colors only, scoped to the splash wrapper (.splash-screen in index.html) so they
   disappear when Blazor replaces #app - never put them on body, it keeps .splash-page.
   ========================================================================== */
@supports not ((color: color-mix(in srgb, red, blue)) and selector(:has(*))) {
    .splash-screen {
        --primary-accent: var(--brand-primary, #1976D2);
        --primary-dark: var(--primary-accent);
        --primary-light: var(--primary-accent);
        --primary-glow: #ffffff;
        --accent-alpha-20: rgba(255, 255, 255, 0.20);
        --accent-alpha-40: rgba(255, 255, 255, 0.40);
        --accent-alpha-60: rgba(255, 255, 255, 0.60);
        --text-primary: #ffffff;
        background: linear-gradient(135deg, rgba(27, 31, 59, 0.25) 0%, rgba(0, 0, 0, 0.40) 50%, rgba(2, 11, 23, 0.30) 100%), var(--primary-accent);
    }

    .mud-wasm-cont {
        background: radial-gradient(circle at 50% 40%, rgba(255, 255, 255, 0.15) 0%, rgba(0, 0, 0, 0.25) 100%), var(--primary-accent);
    }

    .mud-wasm-cont::after {
        background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.16) 0%, transparent 55%), radial-gradient(circle at 45% 35%, rgba(255, 255, 255, 0.12) 0%, rgba(0, 0, 0, 0.30) 100%), var(--primary-accent);
    }
}