/* The boot screen shown while the WebAssembly runtime downloads. It has to paint before .NET exists,
   so it is plain markup in index.html driven by js/boot.js - no Blazor component, and its text cannot be
   localized. Colours come from the design tokens, so it follows the theme like everything else. */

.dt-boot {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 34px;
    padding: 40px;
    box-sizing: border-box;
    background-color: var(--dt-bg);
    background-image: radial-gradient(var(--dt-bg-dot) 1px, transparent 1px);
    background-size: 32px 32px;
    color: var(--dt-text);
    font-family: var(--dt-font-sans);
}

.dt-boot[hidden] {
    display: none;
}

/* Logo lockup: progress arc, a slowly turning dashed ring, and the mark itself. */
.dt-boot-mark {
    position: relative;
    width: 132px;
    height: 132px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dt-boot-rings,
.dt-boot-dashes {
    position: absolute;
    inset: 0;
    width: 132px;
    height: 132px;
}

.dt-boot-rings {
    transform: rotate(-90deg);
}

.dt-boot-track {
    fill: none;
    stroke: var(--dt-border-pane);
    stroke-width: 2;
}

.dt-boot-arc {
    fill: none;
    stroke: var(--dt-accent-fill);
    stroke-width: 2;
    stroke-linecap: round;
    /* Circumference of r=60; js/boot.js moves the first number. */
    stroke-dasharray: 0 376.99;
    transition: stroke-dasharray 0.3s linear;
}

.dt-boot-dashes {
    animation: dt-boot-spin 2.6s linear infinite;
}

.dt-boot-dashes circle {
    fill: none;
    stroke: var(--dt-olive);
    stroke-width: 1;
    stroke-dasharray: 3 14;
    opacity: 0.7;
}

.dt-boot-logo {
    display: block;
    width: 74px;
    height: 74px;
}

.dt-boot-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.dt-boot-wordmark {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: 0.2em;
}

.dt-boot-tagline {
    font-family: var(--dt-font-mono);
    font-size: 11.5px;
    letter-spacing: 0.04em;
    color: var(--dt-text-subtle);
}

.dt-boot-progress {
    width: 100%;
    max-width: 420px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.dt-boot-bar {
    position: relative;
    height: 4px;
    border-radius: 3px;
    background: var(--dt-border-subtle);
    overflow: hidden;
}

.dt-boot-fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: 0;
    border-radius: 3px;
    background: var(--dt-accent-fill);
    transition: width 0.3s linear;
}

.dt-boot-sheen {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 60px;
    background: linear-gradient(90deg, transparent, rgba(190, 238, 12, 0.35), transparent);
    animation: dt-boot-sheen 1.6s linear infinite;
}

.dt-boot-status {
    display: flex;
    align-items: baseline;
    gap: 10px;
    font-family: var(--dt-font-mono);
    font-size: 11.5px;
}

.dt-boot-pct {
    color: var(--dt-accent);
}

.dt-boot-phase {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--dt-text-secondary);
}

.dt-boot-size {
    color: var(--dt-text-faint);
}

/* The log keeps its full height from the start: growing it line by line would push the logo and bar
   upwards, which reads as a jump mid-load. */
.dt-boot-log {
    width: 100%;
    max-width: 420px;
    height: 87px;
    flex: 0 0 87px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 5px;
    overflow: hidden;
    font-family: var(--dt-font-mono);
    font-size: 10.5px;
    line-height: 13px;
    color: var(--dt-text-fainter);
}

.dt-boot-line {
    display: flex;
    gap: 9px;
    animation: dt-boot-rise 0.25s ease both;
}

.dt-boot-line span:last-child {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dt-boot-mark-done {
    color: var(--dt-olive-muted);
}

.dt-boot-line-current {
    color: var(--dt-text-secondary);
}

.dt-boot-line-current .dt-boot-mark-done {
    color: var(--dt-accent);
}

.dt-boot-note {
    display: flex;
    align-items: center;
    gap: 7px;
    font-family: var(--dt-font-mono);
    font-size: 10.5px;
    color: var(--dt-text-fainter);
}

.dt-boot-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--dt-accent-fill);
    animation: dt-boot-pulse 1.4s ease-in-out infinite;
}

@keyframes dt-boot-spin {
    to { transform: rotate(360deg); }
}

@keyframes dt-boot-sheen {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(300%); }
}

@keyframes dt-boot-pulse {
    0%, 100% { opacity: 0.25; }
    50% { opacity: 1; }
}

@keyframes dt-boot-rise {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
    .dt-boot-dashes,
    .dt-boot-sheen,
    .dt-boot-dot,
    .dt-boot-line {
        animation: none;
    }

    .dt-boot-arc,
    .dt-boot-fill {
        transition: none;
    }
}