.public-page,
.minimal-page {
    background:
        radial-gradient(circle at top left, var(--color-background-highlight) 0, transparent 34%),
        linear-gradient(135deg, var(--color-background-top) 0%, var(--color-background-bottom) 100%);
}

.public-shell {
    display: grid;
    width: min(100% - var(--space-8), 520px);
    min-height: 100vh;
    margin-inline: auto;
    padding-block: var(--space-8);
    place-content: center;
}

.public-shell__brand {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-6);
}

.app-header {
    position: sticky;
    z-index: 10;
    top: 0;
    border-bottom: 1px solid var(--color-border);
    background: color-mix(in srgb, var(--color-surface) 90%, transparent);
    backdrop-filter: blur(12px);
}

.app-header__inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    width: min(100% - var(--space-8), var(--content-width));
    min-height: 76px;
    margin-inline: auto;
    gap: var(--space-8);
}

.app-header__user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-muted);
    font-size: var(--font-size-small);
}

.app-header__user form {
    display: contents;
}

.app-header__user-name {
    text-decoration: none;
}

.app-header__user-name:hover {
    color: var(--color-primary-dark);
}

.logout-button {
    padding: var(--space-2);
    color: var(--color-text-muted);
    border: 0;
    border-radius: var(--radius-button);
    background: transparent;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 700;
}

.logout-button:hover {
    color: var(--color-primary-dark);
    background: var(--color-primary-soft);
}

.app-main {
    width: min(100% - var(--space-8), var(--content-width));
    margin-inline: auto;
    padding-block: var(--space-12) var(--space-16);
}

.primary-nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.primary-nav__link,
.primary-nav__disabled {
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-button);
    font-size: var(--font-size-small);
    font-weight: 700;
    text-decoration: none;
}

.primary-nav__link {
    transition: color var(--transition-fast), background var(--transition-fast);
}

.primary-nav__link:hover,
.primary-nav__link.is-current {
    color: var(--color-primary-dark);
    background: var(--color-primary-soft);
}

.primary-nav__disabled {
    color: var(--color-text-muted);
    cursor: not-allowed;
    opacity: 0.55;
}

.nav-toggle {
    display: none;
}

.minimal-page {
    display: grid;
    padding: var(--space-8);
    place-items: center;
}

.error-shell {
    display: grid;
    justify-items: center;
    width: min(100%, 560px);
    gap: var(--space-8);
}

@media (max-width: 760px) {
    .public-shell {
        width: min(100% - var(--space-6), 520px);
        padding-block: var(--space-6);
    }

    .app-header__inner {
        grid-template-columns: 1fr auto;
        width: min(100% - var(--space-6), var(--content-width));
        min-height: 68px;
        gap: var(--space-3);
    }

    .app-header__user {
        display: none;
    }

    .nav-toggle {
        display: grid;
        width: 44px;
        height: 44px;
        padding: 11px;
        border: 0;
        border-radius: var(--radius-button);
        background: var(--color-primary-soft);
        place-content: center;
        gap: 4px;
    }

    .nav-toggle > span:not(.sr-only) {
        display: block;
        width: 20px;
        height: 2px;
        border-radius: var(--radius-pill);
        background: var(--color-primary-dark);
    }

    .primary-nav {
        position: absolute;
        top: calc(100% + var(--space-2));
        right: var(--space-3);
        left: var(--space-3);
        display: none;
        align-items: stretch;
        padding: var(--space-3);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        background: var(--color-surface);
        box-shadow: var(--shadow-card);
        flex-direction: column;
    }

    .primary-nav.is-open {
        display: flex;
    }

    .app-main {
        width: min(100% - var(--space-6), var(--content-width));
        padding-block: var(--space-8) var(--space-12);
    }

    .minimal-page {
        padding: var(--space-6);
    }
}