/**
 * ============================================================
 * Biz4Sale — Global Design System
 * build/adventuresphere/biz4sale/assets/css/b4s-global.css
 * ============================================================
 * Extends avs-global.css tokens with Biz4Sale-specific styles.
 * Loaded on EVERY Biz4Sale page via b4s header.
 * ============================================================
 */


/* ============================================================
   BIZ4SALE COLOUR OVERRIDES (teal-led marketplace feel)
   ============================================================ */
:root {
    --b4s-teal:        #00B8A9;
    --b4s-teal-hover:  #009E91;
    --b4s-teal-muted:  rgba(0, 184, 169, 0.12);
    --b4s-gold:        #FFD700;
    --b4s-gold-muted:  rgba(255, 215, 0, 0.12);
    --b4s-navy:        #0A0E1A;
    --b4s-surface:     #111827;
    --b4s-card:        #1A2035;
    --b4s-border:      #243050;
    --b4s-border-lg:   #2E3F65;
}


/* ============================================================
   B4S NAVBAR — STANDALONE (ACCA Smart / AVS pattern)
   No dependency on CABSTATES navbar.css or avs-navbar.
   Same two-brand structure as AVS — adapted for Biz4Sale.
   ============================================================ */

.b4s-navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 184, 169, 0.25);
    height: 70px;
    display: flex;
    align-items: center;
}

.b4s-nav-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    height: 100%;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ── LEFT: CABSTATES brand (identical to AVS) ── */
.b4s-nav-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    flex-shrink: 0;
    transition: opacity 0.2s ease;
}

.b4s-nav-brand:hover { opacity: 0.8; }

.b4s-nav-brand-logo { width: 36px; height: 36px; display: block; }

.b4s-nav-brand-text { display: flex; flex-direction: column; line-height: 1.1; }

.b4s-nav-brand-name {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--white);
    text-transform: uppercase;
}

.b4s-nav-brand-accent { color: var(--b4s-teal); }

.b4s-nav-brand-tagline {
    font-size: 0.6rem;
    color: var(--avs-text-dim);
    letter-spacing: 0.05em;
}

/* ── Separator ── */
.b4s-nav-separator {
    width: 1px;
    height: 32px;
    background: var(--avs-border);
    flex-shrink: 0;
}

/* ── CENTER: sub-brand + nav links ── */
.b4s-nav-product {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex: 1;
}

.b4s-nav-product-brand {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
    margin-right: 0.75rem;
    transition: color 0.2s ease;
}

.b4s-nav-product-brand:hover { color: var(--b4s-teal); }

.b4s-nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
    flex: 1;
}

.b4s-nav-link {
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--avs-text-muted);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: color 0.2s ease, background 0.2s ease;
    white-space: nowrap;
    display: block;
}

.b4s-nav-link:hover,
.b4s-nav-link.b4s-active {
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
}

/* ── RIGHT: actions ── */
.b4s-nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
    margin-left: auto;
}

.b4s-nav-cta-btn {
    background: var(--b4s-teal);
    color: #0A0A0A;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.55rem 1.1rem;
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    line-height: 1;
}

.b4s-nav-cta-btn:hover {
    background: var(--b4s-teal-hover);
    color: #0A0A0A;
    transform: translateY(-1px);
}

.b4s-nav-admin-link {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--avs-text-dim);
    text-decoration: none;
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--avs-border);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.b4s-nav-admin-link:hover {
    color: var(--b4s-teal);
    border-color: rgba(0, 184, 169, 0.4);
}

/* ── Hamburger ── */
.b4s-nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    margin-left: auto;
    flex-shrink: 0;
}

.b4s-nav-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--avs-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.b4s-nav-hamburger.b4s-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.b4s-nav-hamburger.b4s-open span:nth-child(2) { opacity: 0; }
.b4s-nav-hamburger.b4s-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile ── */
@media (max-width: 960px) {
    .b4s-nav-separator { display: none; }
    .b4s-nav-hamburger { display: flex; }

    .b4s-nav-product {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--avs-surface);
        border-top: 1px solid var(--avs-border);
        padding: 1.25rem 1.5rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        z-index: 999;
        overflow-y: auto;
    }

    .b4s-nav-product.b4s-mobile-open { display: flex; }

    .b4s-nav-product-brand { font-size: 1.1rem; margin-bottom: 1rem; margin-right: 0; }

    .b4s-nav-links {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        gap: 0;
    }

    .b4s-nav-link {
        width: 100%;
        padding: 0.85rem 0.5rem;
        font-size: 1rem;
        border-radius: 0;
        border-bottom: 1px solid var(--avs-border);
    }

    .b4s-nav-actions {
        width: 100%;
        padding-top: 1.25rem;
        border-top: 1px solid var(--avs-border);
        margin-top: 0.5rem;
        flex-wrap: wrap;
        margin-left: 0;
    }
}


/* ============================================================
   B4S PAGE HERO
   ============================================================ */
.b4s-page-hero {
    background: linear-gradient(135deg, var(--avs-bg) 0%, #071620 60%, #081E30 100%);
    border-bottom: 1px solid var(--b4s-border);
    padding: var(--space-xl) 0 var(--space-lg);
    position: relative;
    overflow: hidden;
}

.b4s-page-hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -5%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 184, 169, 0.10) 0%, transparent 65%);
    pointer-events: none;
}

.b4s-hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--b4s-teal-muted);
    color: var(--b4s-teal);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(0, 184, 169, 0.25);
    margin-bottom: var(--space-sm);
}


/* ============================================================
   LISTING GRID
   ============================================================ */
.b4s-listing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.b4s-listing-card {
    background: var(--b4s-card);
    border: 1px solid var(--b4s-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    transition: all var(--transition);
}

.b4s-listing-card:hover {
    border-color: var(--b4s-teal);
    box-shadow: 0 4px 20px rgba(0, 184, 169, 0.2);
    transform: translateY(-3px);
    color: inherit;
}

.b4s-listing-card--assured {
    border-color: var(--b4s-gold);
    box-shadow: 0 0 0 1px rgba(255, 215, 0, 0.15);
}

.b4s-listing-card--assured:hover {
    border-color: var(--b4s-gold);
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.2);
}

.b4s-listing-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    background: var(--b4s-surface);
}

.b4s-listing-img-placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--b4s-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--avs-text-dim);
    font-size: 2.5rem;
}

.b4s-listing-body {
    padding: var(--space-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.b4s-listing-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.b4s-listing-category {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--b4s-teal);
}

.b4s-listing-assured-badge {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--b4s-gold);
    background: var(--b4s-gold-muted);
    border: 1px solid rgba(255,215,0,0.25);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-pill);
}

.b4s-listing-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.4rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.b4s-listing-desc {
    font-size: 0.85rem;
    color: var(--avs-text-muted);
    line-height: 1.55;
    margin-bottom: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.b4s-listing-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--b4s-border);
    margin-top: auto;
}

.b4s-listing-price {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--b4s-gold);
}

.b4s-listing-price--neg {
    font-size: 0.82rem;
    color: var(--avs-text-muted);
    font-weight: 400;
}

.b4s-listing-location {
    font-size: 0.8rem;
    color: var(--avs-text-dim);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}


/* ============================================================
   FILTER SIDEBAR (browse page)
   ============================================================ */
.b4s-browse-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.b4s-filter-sidebar {
    background: var(--b4s-card);
    border: 1px solid var(--b4s-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    position: sticky;
    top: 90px;
}

.b4s-filter-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--avs-text-muted);
    margin-bottom: var(--space-md);
}

.b4s-filter-group {
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--b4s-border);
}

.b4s-filter-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.b4s-filter-group-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.6rem;
}

.b4s-filter-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--avs-text-muted);
    padding: 0.3rem 0;
    cursor: pointer;
}

.b4s-filter-option input[type="checkbox"],
.b4s-filter-option input[type="radio"] {
    accent-color: var(--b4s-teal);
}

.b4s-filter-option:hover {
    color: var(--white);
}


/* ============================================================
   SINGLE LISTING PAGE
   ============================================================ */
.b4s-listing-detail-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--space-xl);
    align-items: start;
}

.b4s-listing-gallery {
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-lg);
    background: var(--b4s-surface);
}

.b4s-gallery-main {
    width: 100%;
    max-height: 420px;
    object-fit: cover;
}

.b4s-detail-section {
    margin-bottom: var(--space-lg);
}

.b4s-detail-section-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--avs-text-muted);
    border-bottom: 1px solid var(--b4s-border);
    padding-bottom: 0.5rem;
    margin-bottom: var(--space-md);
}

.b4s-detail-body {
    font-size: 0.95rem;
    color: var(--avs-text-muted);
    line-height: 1.75;
}

.b4s-detail-stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

.b4s-detail-stat {
    background: var(--b4s-surface);
    border: 1px solid var(--b4s-border);
    border-radius: var(--radius-sm);
    padding: var(--space-sm);
}

.b4s-detail-stat-label {
    font-size: 0.75rem;
    color: var(--avs-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.2rem;
}

.b4s-detail-stat-value {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
}

.b4s-inquiry-card {
    background: var(--b4s-card);
    border: 1px solid var(--b4s-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    position: sticky;
    top: 90px;
}

.b4s-inquiry-price {
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--b4s-gold);
    margin-bottom: 0.25rem;
}

.b4s-inquiry-neg {
    font-size: 0.82rem;
    color: var(--avs-text-muted);
    margin-bottom: var(--space-md);
}


/* ============================================================
   BROWSE PAGE CARD CLASSES (used in browse.php, sold.php, listing.php)
   ============================================================ */

.b4s-card-image-wrap {
    display: block;
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
    background: var(--avs-surface);
    text-decoration: none;
}

.b4s-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.b4s-listing-card:hover .b4s-card-image { transform: scale(1.04); }

.b4s-verified-badge {
    position: absolute;
    top: 0.6rem;
    left: 0.6rem;
    background: rgba(0, 184, 169, 0.92);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-pill);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.b4s-card-body {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.b4s-card-category {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--b4s-teal);
    margin-bottom: 0.4rem;
}

.b4s-card-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.6rem;
    line-height: 1.3;
    flex: 1;
}

.b4s-card-title a { color: var(--white); text-decoration: none; }
.b4s-card-title a:hover { color: var(--b4s-teal); }

.b4s-card-price {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--b4s-gold);
    margin-bottom: 1rem;
}

/* Sold-specific */
.b4s-listing-card--sold { opacity: 0.92; }

.b4s-sold-ribbon {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--avs-success);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.3rem 0.75rem;
    border-bottom-left-radius: var(--radius-sm);
}

.b4s-sold-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(16, 185, 129, 0.88);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 0.75rem;
    text-align: center;
}

/* Pagination */
.b4s-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 2.5rem;
    flex-wrap: wrap;
}

.b4s-page-info {
    font-size: 0.88rem;
    color: var(--avs-text-muted);
    font-family: var(--font-mono);
}


/* ============================================================
   GLOBAL UTILITIES (shared by AVS + B4S pages)
   ============================================================ */

/* Skip link */
.avs-skip-link {
    position: absolute;
    top: -100px;
    left: 1rem;
    background: var(--avs-gold);
    color: var(--black);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    z-index: 9999;
    transition: top 0.2s;
}

.avs-skip-link:focus { top: 1rem; }

/* Error box */
.avs-error-box {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.35);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    color: var(--avs-danger);
}

/* Back to top button */
.avs-back-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--avs-card);
    border: 1px solid var(--avs-border);
    color: var(--avs-text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 100;
}

.avs-back-top:hover {
    background: var(--avs-gold);
    color: var(--black);
    border-color: var(--avs-gold);
}

.avs-back-top--visible { display: flex; }


/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
    .b4s-listing-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .b4s-listing-grid { grid-template-columns: 1fr; }
}


/* ============================================================
   LIST BUSINESS FORM
   ============================================================ */
.b4s-list-form-card {
    background: var(--b4s-card);
    border: 1px solid var(--b4s-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    max-width: 760px;
    margin: 0 auto;
}

.b4s-image-upload-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.b4s-image-slot {
    aspect-ratio: 4/3;
    border: 2px dashed var(--b4s-border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--avs-text-dim);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition);
    overflow: hidden;
    position: relative;
}

.b4s-image-slot:hover {
    border-color: var(--b4s-teal);
    color: var(--b4s-teal);
}

.b4s-image-slot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}


/* ============================================================
   ADMIN — B4S
   ============================================================ */
.b4s-admin-stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}


/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .b4s-listing-grid         { grid-template-columns: repeat(2, 1fr); }
    .b4s-browse-layout        { grid-template-columns: 1fr; }
    .b4s-filter-sidebar       { position: static; }
    .b4s-listing-detail-layout { grid-template-columns: 1fr; }
    .b4s-inquiry-card         { position: static; }
    .b4s-admin-stat-cards     { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .b4s-listing-grid         { grid-template-columns: 1fr; }
    .b4s-detail-stat-grid     { grid-template-columns: 1fr 1fr; }
    .b4s-image-upload-grid    { grid-template-columns: repeat(2, 1fr); }
    .b4s-admin-stat-cards     { grid-template-columns: 1fr 1fr; }
}