:root {
    color-scheme: light dark;
    /* Coast light scheme with a soft blue tint over the app's Grey95 surface. */
    --startup-background: #f8faff;
    --startup-background-wash: #edf2ff;
    --startup-decoration-top: #dbeaff;
    --startup-decoration-bottom: #e7e5ff;
    --startup-on-surface: #191c1d;
    --startup-on-surface-variant: #45464f;
    --startup-primary: #1546f6;
    --startup-progress-track: #e2e1ec;
    --startup-error: #ba1a1a;
    --startup-error-container: #ffdad6;
    --startup-on-error-container: #410002;
    --startup-ease-out: cubic-bezier(0.2, 0, 0, 1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --startup-background: #191c1d;
        --startup-background-wash: #303a68;
        --startup-decoration-top: #304d85;
        --startup-decoration-bottom: #3f3b78;
        --startup-on-surface: #c4c7c7;
        --startup-on-surface-variant: #c6c5d0;
        --startup-primary: #b8c3ff;
        --startup-progress-track: #45464f;
        --startup-error: #ffb4ab;
        --startup-error-container: #93000a;
        --startup-on-error-container: #ffdad6;
    }
}

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: var(--startup-background);
}

body > div {
    width: 100%;
    height: 100%;
}

#showcase-startup {
    position: fixed;
    inset: 0;
    z-index: 2147483647;
    display: grid;
    place-items: center;
    box-sizing: border-box;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 24px;
    overflow: hidden;
    isolation: isolate;
    background: var(--startup-background);
    background:
        radial-gradient(circle at 50% 38%, var(--startup-background-wash) 0, transparent 42%),
        var(--startup-background);
    color: var(--startup-on-surface);
    font-family: ui-rounded, "SF Pro Rounded", "Nunito Sans", system-ui, -apple-system, sans-serif;
    transition: opacity 220ms var(--startup-ease-out);
}

#showcase-startup::before,
#showcase-startup::after {
    position: absolute;
    z-index: 0;
    width: min(62vw, 720px);
    height: min(62vw, 720px);
    border-radius: 50%;
    pointer-events: none;
    filter: blur(18px);
    opacity: 0.48;
}

#showcase-startup::before {
    top: -38%;
    left: -24%;
    content: "";
    background: radial-gradient(circle at 58% 60%, var(--startup-decoration-top) 0, transparent 70%);
}

#showcase-startup::after {
    right: -24%;
    bottom: -38%;
    content: "";
    background: radial-gradient(circle at 42% 40%, var(--startup-decoration-bottom) 0, transparent 70%);
}

.showcase-startup-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: min(100%, 420px);
    box-sizing: border-box;
    text-align: center;
    animation: showcase-startup-enter 420ms var(--startup-ease-out) both;
}

.showcase-startup-progress {
    width: min(100%, 320px);
    height: 4px;
    margin-bottom: 20px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--startup-progress-track);
}

#showcase-startup-progress-value {
    display: block;
    width: 18%;
    height: 100%;
    border-radius: inherit;
    background: var(--startup-primary);
    transition: width 420ms var(--startup-ease-out), background-color 180ms var(--startup-ease-out);
}

#showcase-startup h1 {
    max-width: 390px;
    margin: 0 0 24px;
    text-wrap: balance;
    font-size: clamp(28px, 5vw, 38px);
    font-weight: 650;
    line-height: 1.1;
    letter-spacing: -1px;
}

#showcase-startup p {
    margin: 0;
    line-height: 1.5;
}

#showcase-startup-status {
    min-height: 1.5em;
    font-size: 17px;
    font-weight: 650;
}

#showcase-startup #showcase-startup-hint {
    max-width: 34ch;
    min-height: 1.5em;
    margin-top: 7px;
    color: var(--startup-on-surface-variant);
    font-size: 14px;
}

#showcase-startup-error {
    width: min(100%, 520px);
    max-height: 180px;
    margin: 24px 0 0;
    overflow: auto;
    padding: 14px 16px;
    border: 1px solid var(--startup-error);
    border-radius: 14px;
    box-sizing: border-box;
    background: var(--startup-error-container);
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    color: var(--startup-on-error-container);
    font-size: 12px;
    line-height: 1.5;
    text-align: left;
}

#showcase-startup-retry {
    min-height: 44px;
    margin-top: 18px;
    padding: 0 22px;
    border: 0;
    border-radius: 999px;
    background: var(--startup-primary);
    color: var(--startup-background);
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 140ms var(--startup-ease-out), box-shadow 180ms var(--startup-ease-out);
}

#showcase-startup-retry:focus-visible {
    outline: 3px solid var(--startup-primary);
    outline-offset: 3px;
}

#showcase-startup-retry:active {
    transform: scale(0.97);
}

#showcase-startup[data-state="failed"] #showcase-startup-progress-value {
    background: var(--startup-error);
}

#showcase-startup.is-ready {
    pointer-events: none;
    opacity: 0;
}

#showcase-startup.is-ready .showcase-startup-content {
    transform: translateY(-4px);
    transition: transform 220ms var(--startup-ease-out);
}

#showcase-startup noscript {
    margin-top: 18px;
    color: var(--startup-on-surface-variant);
    font-size: 13px;
}

@media (hover: hover) and (pointer: fine) {
    #showcase-startup-retry:hover {
        box-shadow: 0 8px 24px rgba(21, 70, 246, 0.2);
        transform: translateY(-1px);
    }
}

@media (max-width: 600px) {
    #showcase-startup {
        padding: 20px;
    }

    #showcase-startup h1 {
        font-size: clamp(27px, 9vw, 34px);
    }
}

@media (prefers-reduced-motion: reduce) {
    #showcase-startup,
    .showcase-startup-content {
        animation: showcase-fade-in 180ms ease-out both;
    }

    #showcase-startup-progress-value {
        transition: none;
    }

    #showcase-startup.is-ready .showcase-startup-content {
        transform: none;
    }
}

@media (forced-colors: active) {
    #showcase-startup-progress,
    #showcase-startup-retry {
        forced-color-adjust: auto;
    }
}

@keyframes showcase-startup-enter {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes showcase-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}