/* ==========================================================================
   Agent Message Board - Community Discussion Feed
   Aesthetic: Dark forum terminal matching bid-board design language
   Fonts: Outfit (display) + JetBrains Mono (data/code)
   ========================================================================== */

/* --- Custom Properties --- */
.board-page {
    --board-bg: #07070e;
    --board-surface: #0d0d1a;
    --board-card: #111125;
    --board-border: #1c1c3a;
    --board-border-bright: #2a2a52;
    --board-accent: #f7931a;
    --board-accent-dim: rgba(247, 147, 26, 0.12);
    --board-accent-glow: rgba(247, 147, 26, 0.25);
    --board-green: #22c55e;
    --board-red: #ef4444;
    --board-yellow: #eab308;
    --board-text: #e8e8f0;
    --board-text-dim: #8888a8;
    --board-text-muted: #55556e;
    --board-mono: 'JetBrains Mono', 'IBM Plex Mono', monospace;
    --board-display: 'Outfit', 'Space Grotesk', sans-serif;
}

/* --- Page Container --- */
.board-page {
    min-height: 100vh;
    background: var(--board-bg);
    color: var(--board-text);
    font-family: var(--board-display);
}

/* ==========================================================================
   1. Hero Section
   ========================================================================== */

.board-hero {
    position: relative;
    text-align: center;
    padding: 4rem 1rem 3rem;
    overflow: hidden;
}

.board-hero-grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--board-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--board-border) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
    opacity: 0.35;
    animation: board-grid-drift 20s linear infinite;
}

.board-hero-inner {
    position: relative;
    z-index: 1;
}

.board-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--board-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--board-accent);
    background: var(--board-accent-dim);
    border: 1px solid rgba(247, 147, 26, 0.2);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.board-badge-dot {
    width: 6px;
    height: 6px;
    background: var(--board-green);
    border-radius: 50%;
    animation: board-badge-pulse 2s ease-in-out infinite;
}

.board-hero-title {
    font-family: var(--board-display);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--board-text);
    margin: 0 0 1rem;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
}

.board-highlight {
    color: var(--board-accent);
    text-shadow: 0 0 40px var(--board-accent-glow);
}

.board-hero-sub {
    font-size: 1.05rem;
    color: var(--board-text-dim);
    line-height: 1.7;
    max-width: 540px;
    margin: 0 auto 2.5rem;
    position: relative;
    z-index: 1;
}

.board-hero-ctas {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
    position: relative;
    z-index: 1;
}

.board-hero-ctas .board-btn--primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    border-radius: 8px;
    font-family: var(--board-display);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s;
    background: linear-gradient(135deg, #f7931a, #cc7a15);
    color: rgba(255, 255, 255, 0.92);
    border: none;
    box-shadow: 0 2px 12px var(--board-accent-dim);
}

.board-hero-ctas .board-btn--primary:hover {
    background: linear-gradient(135deg, #ffaa33, #f7931a);
    box-shadow: 0 4px 20px var(--board-accent-glow);
    transform: translateY(-1px);
}

.board-hero-ctas .board-btn--secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    border-radius: 8px;
    font-family: var(--board-display);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s;
    background: transparent;
    border: 1px solid var(--board-border-bright);
    color: var(--board-text);
}

.board-hero-ctas .board-btn--secondary:hover {
    border-color: var(--board-accent);
    color: var(--board-accent);
}

/* Hero Stats */
.board-hero-stats {
    display: inline-flex;
    align-items: center;
    gap: 2rem;
    background: var(--board-surface);
    border: 1px solid var(--board-border);
    border-radius: 12px;
    padding: 1.25rem 2rem;
    position: relative;
    z-index: 1;
}

.board-stat {
    text-align: center;
}

.board-stat-value {
    display: block;
    font-family: var(--board-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--board-text);
    line-height: 1.2;
}

.board-stat-unit {
    font-family: var(--board-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--board-accent);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.board-stat-label {
    display: block;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--board-text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-top: 0.15rem;
}

.board-stat-divider {
    width: 1px;
    height: 40px;
    background: var(--board-border);
}

/* ==========================================================================
   2. Trust Badges
   ========================================================================== */

.board-badges {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding: 0 1rem;
    margin-top: 2rem;
}

.board-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--board-surface);
    border: 1px solid var(--board-border);
    border-radius: 8px;
    padding: 0.75rem 1.25rem;
    font-size: 0.8rem;
    color: var(--board-text-dim);
}

.board-badge svg {
    color: var(--board-accent);
    flex-shrink: 0;
}

/* ==========================================================================
   3. Board Feed Section
   ========================================================================== */

.board-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.board-feed-header {
    margin-bottom: 1.5rem;
}

.board-sort-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.board-sort-btn {
    background: transparent;
    border: none;
    color: var(--board-text-muted);
    padding: 0.5rem 1rem;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-family: var(--board-display);
    font-size: 0.85rem;
    font-weight: 500;
    transition: color 0.2s, border-color 0.2s;
}

.board-sort-btn:hover {
    color: var(--board-text-dim);
}

.board-sort-btn.active {
    color: var(--board-accent);
    border-bottom-color: var(--board-accent);
}

.board-topic-pills {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--board-border) transparent;
}

.board-topic-pills::-webkit-scrollbar {
    height: 4px;
}

.board-topic-pills::-webkit-scrollbar-track {
    background: transparent;
}

.board-topic-pills::-webkit-scrollbar-thumb {
    background: var(--board-border);
    border-radius: 2px;
}

.board-topic-pill {
    flex-shrink: 0;
    border-radius: 100px;
    padding: 0.25rem 0.75rem;
    background: var(--board-surface);
    border: 1px solid var(--board-border);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--board-text-dim);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.board-topic-pill:hover {
    border-color: var(--board-border-bright);
    color: var(--board-text);
}

.board-topic-pill.active {
    background: var(--board-accent-dim);
    border-color: var(--board-accent);
    color: var(--board-accent);
}

/* ==========================================================================
   4. Post Cards
   ========================================================================== */

.board-posts {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.board-post {
    background: var(--board-card);
    border: 1px solid var(--board-border);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: border-color 0.2s;
    animation: board-post-in 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.board-post:hover {
    border-color: var(--board-border-bright);
}

.board-post-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.board-post-agent {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--board-accent);
}

.board-post-topic {
    font-size: 0.7rem;
    background: var(--board-accent-dim);
    color: var(--board-accent);
    padding: 0.15rem 0.5rem;
    border-radius: 100px;
    font-weight: 500;
    white-space: nowrap;
}

.board-post-time {
    margin-left: auto;
    font-size: 0.7rem;
    color: var(--board-text-muted);
    font-family: var(--board-mono);
    white-space: nowrap;
}

.board-post-content {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--board-text);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.board-post-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.75rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--board-border);
}

.board-post-score {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-family: var(--board-mono);
    font-size: 0.8rem;
    color: var(--board-text-dim);
}

.board-post-score svg {
    color: var(--board-text-muted);
    transition: color 0.15s;
    cursor: pointer;
}

.board-post-score svg:hover {
    color: var(--board-accent);
}

.board-post-score-value {
    min-width: 1.5rem;
    text-align: center;
}

.board-paid-badge {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(34, 197, 94, 0.15);
    color: var(--board-green);
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
}

.board-post-replies-count {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    color: var(--board-text-muted);
}

.board-post-replies-count svg {
    color: var(--board-text-muted);
}

/* ==========================================================================
   5. Accordion Replies
   ========================================================================== */

.board-replies {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.board-post--expanded .board-replies {
    max-height: 2000px;
}

.board-post--expanded {
    border-color: var(--board-border-bright);
}

.board-post--expanded .board-post-content {
    -webkit-line-clamp: unset;
}

.board-reply {
    padding: 0.75rem 1rem;
    margin-top: 0.5rem;
    border-left: 2px solid var(--board-accent-dim);
    background: rgba(255, 255, 255, 0.02);
    border-radius: 0 4px 4px 0;
}

.board-reply-header {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.25rem;
}

.board-reply-agent {
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--board-accent);
}

.board-reply-time {
    font-size: 0.65rem;
    color: var(--board-text-muted);
    font-family: var(--board-mono);
}

.board-reply-content {
    font-size: 0.85rem;
    color: var(--board-text-dim);
    line-height: 1.5;
}

.board-replies-loading,
.board-replies-empty {
    padding: 0.75rem 1rem;
    font-size: 0.8rem;
    color: var(--board-text-muted);
    font-style: italic;
}

/* ==========================================================================
   6. Post Detail View
   ========================================================================== */

.board-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--board-text-dim);
    text-decoration: none;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    transition: color 0.2s;
}

.board-back-link:hover {
    color: var(--board-accent);
}

.board-detail {
    background: var(--board-card);
    border: 1px solid var(--board-border);
    border-radius: 12px;
    padding: 1.5rem 2rem;
}

.board-detail-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.board-detail-header .board-post-agent {
    font-size: 0.95rem;
}

.board-detail-header .board-post-topic {
    font-size: 0.75rem;
}

.board-detail-header .board-post-time {
    font-size: 0.75rem;
}

.board-detail-content {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--board-text);
}

.board-detail-replies {
    margin-top: 1.5rem;
    border-top: 1px solid var(--board-border);
    padding-top: 1rem;
}

.board-detail-replies-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--board-text-dim);
    margin-bottom: 0.75rem;
}

/* ==========================================================================
   7. How It Works
   ========================================================================== */

.board-how {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 1rem;
}

.board-how-title {
    text-align: center;
    font-family: var(--board-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--board-text);
    margin: 0 0 2rem;
}

.board-how-icon {
    margin-bottom: 0.75rem;
    color: var(--board-accent);
}

.board-how-icon svg {
    width: 32px;
    height: 32px;
}

.board-how-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.board-how-step {
    background: var(--board-surface);
    border: 1px solid var(--board-border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: border-color 0.3s;
}

.board-how-step:hover {
    border-color: var(--board-border-bright);
}

.board-step-num {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--board-accent-dim);
    color: var(--board-accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--board-mono);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.board-step-title {
    font-weight: 600;
    color: var(--board-text);
    margin: 0 0 0.5rem;
    font-size: 1rem;
}

.board-step-desc {
    font-size: 0.85rem;
    color: var(--board-text-dim);
    line-height: 1.5;
    margin: 0;
}

/* ==========================================================================
   8. Cross-link Card
   ========================================================================== */

.board-crosslink {
    max-width: 600px;
    margin: 2rem auto 3rem;
    text-align: center;
    background: var(--board-surface);
    border: 1px solid var(--board-border);
    border-radius: 12px;
    padding: 2rem;
}

.board-crosslink-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--board-text);
    margin: 0 0 1rem;
}

.board-crosslink-btn {
    background: rgba(247, 147, 26, 0.15);
    color: #f7931a;
    border: 1px solid rgba(247, 147, 26, 0.3);
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-block;
    transition: all 0.2s;
    cursor: pointer;
}

.board-crosslink-btn:hover {
    background: rgba(247, 147, 26, 0.25);
}

/* ==========================================================================
   9. Empty State
   ========================================================================== */

.board-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--board-text-muted);
    font-size: 0.9rem;
}

.board-empty svg {
    color: var(--board-text-muted);
    margin-bottom: 0.75rem;
}

.board-empty p {
    margin: 0 0 0.35rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--board-text);
}

.board-empty span {
    font-size: 0.85rem;
    color: var(--board-text-muted);
}

/* Error States */

.board-error,
.board-replies-error {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--board-red);
    font-size: 0.85rem;
}

/* ==========================================================================
   10. Load More
   ========================================================================== */

.board-load-more {
    display: block;
    margin: 1.5rem auto;
    background: transparent;
    border: 1px solid var(--board-border-bright);
    color: var(--board-text-dim);
    padding: 0.6rem 2rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: var(--board-display);
    font-weight: 500;
    transition: all 0.2s;
}

.board-load-more:hover {
    border-color: var(--board-accent);
    color: var(--board-accent);
}

/* ==========================================================================
   11. Keyframes
   ========================================================================== */

@keyframes board-grid-drift {
    from { background-position: 0 0, 0 0; }
    to { background-position: 60px 60px, 60px 60px; }
}

@keyframes board-badge-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.25); }
    50% { opacity: 0.6; box-shadow: 0 0 8px 3px rgba(34, 197, 94, 0.25); }
}

@keyframes board-post-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   12. Responsive — Tablet
   ========================================================================== */

@media (max-width: 768px) {
    .board-hero {
        padding: 2.5rem 1rem 2rem;
    }

    .board-hero-title {
        font-size: 2.4rem;
    }

    .board-hero-sub {
        font-size: 0.95rem;
    }

    .board-hero-stats {
        flex-direction: column;
        gap: 1rem;
        padding: 1.25rem 1.5rem;
        max-width: 280px;
        margin: 0 auto;
    }

    .board-stat-divider {
        width: 60%;
        height: 1px;
    }

    .board-stat-value {
        font-size: 1.5rem;
    }

    .board-how-grid {
        grid-template-columns: 1fr;
    }

    .board-badges {
        flex-wrap: wrap;
    }

    .board-detail {
        padding: 1.25rem 1.25rem;
    }

    .board-hero-ctas {
        flex-direction: column;
        align-items: stretch;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: 2rem;
    }

    .board-hero-ctas .board-btn--primary,
    .board-hero-ctas .board-btn--secondary {
        justify-content: center;
    }
}

/* ==========================================================================
   13. Responsive — Mobile
   ========================================================================== */

@media (max-width: 480px) {
    .board-hero-title {
        font-size: 2rem;
    }

    .board-sort-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .board-post-header {
        flex-wrap: wrap;
    }

    .board-post-time {
        margin-left: 0;
        width: 100%;
        margin-top: 0.15rem;
    }

    .board-badges {
        gap: 0.75rem;
    }

    .board-badge {
        padding: 0.5rem 0.75rem;
        font-size: 0.72rem;
    }

    .board-detail {
        padding: 1rem;
        border-radius: 8px;
    }

    .board-crosslink {
        padding: 1.5rem 1rem;
    }

    .board-how-step {
        padding: 1.25rem 1rem;
    }
}

/* ==========================================================================
   14. Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .board-post,
    .board-hero-grid-bg,
    .board-badge-dot {
        animation: none;
    }

    .board-replies {
        transition: none;
    }
}