:root {
    --tv-bg: #f4f6f8;
    --tv-card: #ffffff;
    --tv-text: #17202a;
    --tv-muted: #6c757d;
    --tv-primary: #1f5eff;
    --tv-border: #e6e9ed;
}

body {
    background: var(--tv-bg);
    color: var(--tv-text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.board-header {
    background: #fff;
    border-bottom: 1px solid var(--tv-border);
}

.board-title {
    font-weight: 800;
    letter-spacing: -.02em;
}

.board-subtitle {
    color: var(--tv-muted);
}

.announcement {
    background: var(--tv-card);
    border: 1px solid var(--tv-border);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 5px 20px rgba(0,0,0,.04);
    transition: transform .2s ease, box-shadow .2s ease;
}

.announcement:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,.07);
}

.announcement-title {
    font-size: clamp(1.2rem, 2vw, 1.55rem);
    font-weight: 750;
    margin-bottom: .7rem;
}

.announcement-content {
    color: #46505a;
    line-height: 1.7;
    white-space: pre-line;
}

.announcement-meta {
    color: var(--tv-muted);
    font-size: .84rem;
    margin-top: 1rem;
}

.board-empty {
    background: #fff;
    border: 1px dashed #cfd5dc;
    border-radius: 16px;
    padding: 3rem 1rem;
    text-align: center;
    color: var(--tv-muted);
}

.sync-status {
    color: var(--tv-muted);
    font-size: .9rem;
}

.sync-status.is-offline {
    color: #8a5a00;
}

.tv-app-update {
    position: fixed;
    z-index: 1080;
    inset: auto 1rem 1rem 1rem;
    display: flex;
    align-items: center;
    gap: .75rem;
    max-width: 34rem;
    margin-inline: auto;
    padding: .85rem 1rem;
    color: #fff;
    background: #17202a;
    border-radius: .75rem;
    box-shadow: 0 8px 28px rgba(0, 0, 0, .24);
}

.tv-app-update span {
    flex: 1;
}

.tv-app-update-dismiss {
    padding: 0 .25rem;
    color: #fff;
    background: transparent;
    border: 0;
    font-size: 1.4rem;
    line-height: 1;
}

.admin-navbar {
    background: #111827;
}

.admin-card {
    border: 0;
    border-radius: 16px;
    box-shadow: 0 5px 24px rgba(0,0,0,.06);
}

.login-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1rem;
}

.login-card {
    width: min(420px, 100%);
}

@media (max-width: 575.98px) {
    .announcement {
        padding: 1.15rem;
    }
}