.site-header,
.top-nav,
.sidebar,
.content-panel,
.card {
    background-color: var(--color-bg-elevated);
    background-image: var(--surface-iron);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-panel);
    position: relative;
}

.site-header::before,
.top-nav::before,
.sidebar::before,
.content-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    border: 1px solid rgb(255 255 255 / 3%);
    pointer-events: none;
    border-radius: inherit;
}

.site-header,
.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 0.3rem;
    margin-bottom: 1rem;
}

.top-nav__links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.top-nav__links a {
    font-weight: 600;
    letter-spacing: 0.02em;
}

.sidebar {
    border-radius: 0.3rem;
    padding: 0.875rem;
}

.tool-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.75rem;
}

.tool-list li,
.card {
    border-radius: 0.2rem;
    border: 1px solid var(--color-border-strong);
    border-left: 3px solid var(--color-border-accent);
    background-color: var(--color-surface);
    background-image: var(--surface-wood);
    box-shadow: var(--shadow-card);
    padding: 0.875rem;
}

.content-panel {
    border-radius: 0.3rem;
    padding: 1rem;
}

.content-panel > :first-child {
    margin-top: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    border: 1px solid transparent;
    border-radius: 0.2rem;
    font: inherit;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.02em;
    cursor: pointer;
    padding: 0.65rem 0.95rem;
    color: var(--color-text);
    background: var(--color-surface-raised);
    transition: transform 140ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(180deg, var(--color-gold-400), var(--color-accent-strong));
    color: var(--color-text-inverse);
    border-color: color-mix(in srgb, var(--color-accent-strong) 72%, black);
}

.btn-secondary {
    background: linear-gradient(180deg, var(--color-surface-raised), var(--color-surface));
    border-color: var(--color-border-strong);
}

.btn-ghost {
    background: transparent;
    border-color: var(--color-border);
}

.btn[disabled],
.btn[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: 0.62;
    transform: none;
    box-shadow: none;
}

.form-control,
input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--color-border-strong);
    border-radius: 0.25rem;
    background: var(--color-surface);
    color: var(--color-text);
    padding: 0.65rem 0.75rem;
}

label {
    display: inline-block;
    margin-bottom: 0.35rem;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

::placeholder {
    color: color-mix(in srgb, var(--color-text-muted) 68%, var(--color-bg));
}

@media (min-width: 768px) {
    .site-header,
    .top-nav {
        padding: 0.9rem 1.25rem;
    }

    .content-panel {
        padding: 1.3rem;
    }
}

@media (min-width: 1024px) {
    .sidebar {
        position: sticky;
        top: 1rem;
        max-height: calc(100vh - 2rem);
        overflow: auto;
    }

    .content-panel {
        min-height: 62vh;
        padding: 1.55rem;
    }

    .tool-list {
        gap: 0.9rem;
    }
}

@media (min-width: 1280px) {
    .site-header,
    .top-nav {
        margin-bottom: 1.2rem;
    }

    .content-panel {
        padding: 1.8rem;
    }
}


.random-event-form {
    display: grid;
    gap: 1rem;
    margin-bottom: 1rem;
}

.random-event-form fieldset {
    border: 1px solid var(--color-border);
    border-radius: 0.25rem;
    padding: 0.75rem 0.9rem;
}

.random-event-form label {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.45rem;
    color: var(--color-text);
}

.random-event-form input[type="checkbox"] {
    width: auto;
}

.random-event-results {
    display: grid;
    gap: 0.75rem;
}

.random-event-results ul {
    margin-bottom: 0;
}