.board-shell {
    padding: 2.5rem 0 4rem;
}

.board-hero,
.board-card,
.board-thread-card,
.board-reply-card,
.board-form-card,
.board-side-card,
.board-empty,
.board-admin-note {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(27, 54, 93, 0.12);
    border-radius: 24px;
    box-shadow: 0 18px 45px rgba(23, 40, 78, 0.08);
}

.board-hero {
    padding: 2rem;
    margin-bottom: 1.75rem;
}

.board-hero h1 {
    font-size: clamp(2rem, 3vw, 3rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.board-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-top: 1rem;
}

.board-filter-form,
.board-editor-form,
.board-reply-form {
    display: grid;
    gap: 1rem;
}

.board-filter-grid,
.board-editor-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(12, minmax(0, 1fr));
}

.board-field {
    display: grid;
    gap: 0.45rem;
}

.board-field label {
    font-weight: 700;
    color: #17325b;
}

.board-span-12 { grid-column: span 12; }
.board-span-8 { grid-column: span 8; }
.board-span-6 { grid-column: span 6; }
.board-span-4 { grid-column: span 4; }

.board-field input,
.board-field select,
.board-field textarea {
    width: 100%;
    border: 1px solid rgba(27, 54, 93, 0.18);
    border-radius: 16px;
    padding: 0.9rem 1rem;
    background: #fff;
}

.board-list {
    display: grid;
    gap: 1rem;
}

.board-thread-card {
    padding: 1.2rem 1.3rem;
}

.board-thread-meta,
.board-reply-meta,
.board-badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    align-items: center;
}

.board-thread-card h3,
.board-form-card h1,
.board-thread-page-title {
    font-weight: 800;
    color: #11284c;
}

.board-thread-card p,
.board-reply-content,
.board-side-card p {
    color: #40546f;
}

.board-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 0.25rem 0.7rem;
    font-size: 0.82rem;
    font-weight: 700;
    background: rgba(56, 107, 232, 0.12);
    color: #2957b8;
}

.board-badge.is-warning {
    background: rgba(255, 183, 0, 0.16);
    color: #9f6a00;
}

.board-badge.is-success {
    background: rgba(29, 162, 98, 0.14);
    color: #127247;
}

.board-two-column {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: minmax(0, 2fr) minmax(300px, 1fr);
}

.board-side-card,
.board-form-card,
.board-card {
    padding: 1.35rem;
}

.board-thread-main {
    display: grid;
    gap: 1rem;
}

.board-reply-list {
    display: grid;
    gap: 0.9rem;
}

.board-reply-card {
    padding: 1rem 1.1rem;
}

.board-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    align-items: center;
}

.board-empty {
    padding: 2rem;
    text-align: center;
    color: #54657e;
}

.board-section-title {
    font-size: 1.15rem;
    font-weight: 800;
    margin-bottom: 0.9rem;
}

.board-help-list {
    display: grid;
    gap: 0.75rem;
    padding-left: 1.1rem;
    color: #40546f;
}

.board-inline-details {
    border-top: 1px solid rgba(27, 54, 93, 0.12);
    padding-top: 1rem;
}

.board-inline-details summary {
    cursor: pointer;
    font-weight: 700;
    color: #17325b;
}

.board-inline-form {
    display: grid;
    gap: 1rem;
}

.board-notification-list {
    display: grid;
    gap: 0.85rem;
}

.board-notification-item {
    display: grid;
    gap: 0.75rem;
    border: 1px solid rgba(27, 54, 93, 0.1);
    border-radius: 18px;
    padding: 1rem 1.1rem;
    background: rgba(255, 255, 255, 0.92);
}

.board-notification-item.is-unread {
    border-color: rgba(56, 107, 232, 0.28);
    box-shadow: inset 0 0 0 1px rgba(56, 107, 232, 0.12);
}

.board-notification-item h3,
.board-notification-item h2 {
    color: #11284c;
    font-weight: 800;
    margin: 0;
}

@media (max-width: 991.98px) {
    .board-two-column {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767.98px) {
    .board-span-8,
    .board-span-6,
    .board-span-4 {
        grid-column: span 12;
    }

    .board-hero,
    .board-side-card,
    .board-form-card,
    .board-card,
    .board-thread-card,
    .board-reply-card {
        border-radius: 20px;
    }
}