:root {
    --blank-bg: #f4f1ea;
    --blank-bg-accent: rgba(190, 146, 84, 0.18);
    --blank-surface: rgba(255, 255, 255, 0.92);
    --blank-border: rgba(57, 46, 33, 0.14);
    --blank-text: #1f1a14;
    --blank-muted: #5f5648;
    --blank-primary: #8c6239;
    --blank-primary-strong: #704b27;
    --blank-shadow: 0 30px 70px rgba(59, 44, 27, 0.14);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body.blank-404-theme {
    min-height: 100vh;
    font-family: "Instrument Sans", "Segoe UI", sans-serif;
    color: var(--blank-text);
    background:
        radial-gradient(circle at top left, var(--blank-bg-accent), transparent 34%),
        linear-gradient(180deg, #fbf8f2 0%, var(--blank-bg) 100%);
}

.blank-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.blank-card {
    width: min(100%, 620px);
    padding: 32px;
    border: 1px solid var(--blank-border);
    border-radius: 28px;
    background: var(--blank-surface);
    box-shadow: var(--blank-shadow);
    backdrop-filter: blur(18px);
}

.blank-card__status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(140, 98, 57, 0.12);
    color: var(--blank-primary-strong);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.blank-card h1 {
    margin: 18px 0 14px;
    font-size: clamp(2rem, 5vw, 3.2rem);
    line-height: 1.05;
}

.blank-card__title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
}

.blank-card__message {
    margin: 12px 0 0;
    color: var(--blank-muted);
    font-size: 1rem;
    line-height: 1.7;
}

.blank-card__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.blank-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.blank-button:hover {
    transform: translateY(-1px);
}

.blank-button--primary {
    background: var(--blank-primary);
    color: #fff8f0;
    box-shadow: 0 16px 30px rgba(112, 75, 39, 0.18);
}

.blank-button--primary:hover {
    background: var(--blank-primary-strong);
}

.blank-button--ghost {
    border: 1px solid var(--blank-border);
    color: var(--blank-text);
    background: rgba(255, 255, 255, 0.74);
}

@media (max-width: 640px) {
    .blank-shell {
        padding: 16px;
    }

    .blank-card {
        padding: 24px;
        border-radius: 24px;
    }

    .blank-card__actions {
        flex-direction: column;
    }

    .blank-button {
        width: 100%;
    }
}