.system-black {
    position: fixed;
    inset: 0;
    z-index: 600;
    background: #000;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.system-black-opaque {
    opacity: 1;
}

.system-power-hint {
    position: absolute;
    left: 0;
    right: 0;
    bottom: calc(var(--viewport-h) * 0.12);
    margin: 0;
    text-align: center;
    font-size: 1.0833rem;
    color: #444;
    animation: system-hint-in 1s ease;
}

@keyframes system-hint-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.system-login {
    position: fixed;
    inset: 0;
    z-index: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-darker-background);
}

.system-login-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.3333rem;
}

.system-login-user {
    margin: 0;
    font-size: 1.3333rem;
    color: var(--color-bright-foreground);
}

.system-login-input {
    width: 26.6667rem;
    height: 4.3333rem;
    padding: 0 1.3333rem;
    text-align: center;
    background: var(--color-background);
    color: var(--color-foreground);
    border: 2px solid var(--color-foreground);
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: 1.1667rem;
    letter-spacing: 0.2857em;
    outline: none;
}

.system-login-input:focus {
    border-color: var(--color-accent);
}

.system-login-input::placeholder {
    color: var(--color-foreground);
    opacity: 0.66;
    letter-spacing: normal;
}

.system-splash {
    position: fixed;
    inset: 0;
    z-index: 700;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3.3333rem;
    background: var(--color-background);
    transition: opacity 0.5s ease;
}

.system-splash-fading {
    opacity: 0;
}

.system-splash-logo {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.8333rem;
    line-height: 1.2;
    color: var(--color-foreground);
}

.system-splash-track {
    width: 25rem;
    height: 0.8333rem;
    background: var(--color-selection);
}

.system-splash-fill {
    width: 0;
    height: 100%;
    background: var(--color-foreground);
    transition: width 1s cubic-bezier(0, 0, 0.2, 1);
}

.system-splash-fill-boot {
    width: 70%;
}

.system-splash-fill-done {
    width: 100%;
    transition-duration: 0.3s;
}