/* ==========================================================================
   SUBPAGE BASE & BANNER STYLES
   Tối ưu 100% Responsive, Phối màu & Font chữ tự động theo biến :root
   ========================================================================== */
.subpage-body {
    padding-top: 80px;
    background-color: #ffffff;
    color: var(--text);
    font-family: var(--font-main, 'Plus Jakarta Sans', sans-serif);
    line-height: 1.6;
}

.subpage-main {
    min-height: calc(100vh - 420px);
}

.subpage-body h1,
.subpage-body h2,
.subpage-body h3,
.subpage-body h4,
.page-banner-title,
.sidebar-title,
.article-title,
.related-title,
.card-title,
.vm-title,
.cv-title {
    font-family: var(--font-heading, var(--font-main, 'Plus Jakarta Sans', sans-serif));
}

.subpage-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Page Banner & Breadcrumbs (3 Variants: Light Center, Dark Cover, Split Modern) */
.page-banner {
    position: relative;
    padding: 60px 20px 45px;
    background: linear-gradient(180deg, var(--primary-light) 0%, rgba(255, 255, 255, 0.95) 100%);
    text-align: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 40px;
}

.page-banner.banner-dark-cover {
    background: linear-gradient(135deg, #0f172a 0%, var(--primary-dark) 100%);
    color: #ffffff;
    border-bottom: none;
    padding: 70px 20px 55px;
}
.page-banner.banner-dark-cover .page-banner-badge {
    background-color: rgba(255, 255, 255, 0.14);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.25);
}
.page-banner.banner-dark-cover .page-banner-title {
    color: #ffffff;
}
.page-banner.banner-dark-cover .page-banner-desc {
    color: rgba(255, 255, 255, 0.85);
}
.page-banner.banner-dark-cover .breadcrumbs,
.page-banner.banner-dark-cover .breadcrumbs a {
    color: rgba(255, 255, 255, 0.8);
}
.page-banner.banner-dark-cover .breadcrumbs span,
.page-banner.banner-dark-cover .breadcrumbs a:hover {
    color: #ffffff;
}

.page-banner.banner-split-modern {
    text-align: left;
    background: var(--light, #f8fafc);
    border-bottom: 1px solid #e2e8f0;
    padding: 50px 20px 40px;
}
.page-banner.banner-split-modern .page-banner-desc {
    margin: 0 0 18px 0;
}
.page-banner.banner-split-modern .breadcrumbs {
    justify-content: flex-start;
    display: inline-flex;
    background: #ffffff;
    padding: 8px 18px;
    border-radius: var(--radius-btn, 30px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    border: 1px solid #edf2f7;
}

.page-banner-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--primary);
    border-radius: var(--radius-btn, 50px);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    margin-bottom: 15px;
}

.page-banner-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 12px;
    line-height: 1.25;
}

.page-banner-desc {
    max-width: 700px;
    margin: 0 auto 20px;
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.6;
}

.breadcrumbs {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.breadcrumbs a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.breadcrumbs a:hover {
    color: var(--primary);
}

.breadcrumbs i {
    font-size: 0.75rem;
    opacity: 0.5;
}

.breadcrumbs span {
    color: var(--primary);
    font-weight: 600;
}

.card-tag {
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 8px;
    display: inline-block;
}

.btn-buy-now, .btn-add-cart {
    padding: 14px 28px;
    border-radius: var(--radius-btn, var(--radius));
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-buy-now {
    background: var(--primary);
    color: #ffffff !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    flex: 1;
}

.btn-buy-now:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-add-cart {
    background: #ffffff;
    color: var(--primary) !important;
    border: 2px solid var(--primary);
    flex: 1;
}

.btn-add-cart:hover {
    background: var(--primary-light);
}

@media (max-width: 991px) {
    .page-banner-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .subpage-body {
        padding-top: 70px;
    }
    .page-banner.banner-split-modern {
        text-align: center;
    }
    .page-banner.banner-split-modern .page-banner-desc {
        margin: 0 auto 18px auto;
    }
    .page-banner.banner-split-modern .breadcrumbs {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .page-banner-title {
        font-size: 1.6rem;
    }
}

/* ==========================================================================
   CONTACT PAGE DEDICATED STYLES (CARDS, FORM, MAP, SOCIALS)
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.contact-cards-4col {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 50px;
}

.contact-card {
    background: #ffffff;
    padding: 28px 24px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid #edf2f7;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    border-color: var(--primary);
}

.contact-icon {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 16px;
    display: inline-block;
}

.contact-card h3, .contact-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.contact-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

.contact-form-box {
    background: #ffffff;
    padding: 35px;
    border-radius: var(--radius);
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.05);
    border: 1px solid #edf2f7;
}

.contact-social-icons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 15px;
}

.social-circle-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #f1f5f9;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1rem;
    transition: var(--transition);
    border: 1px solid #e2e8f0;
}

.social-circle-btn:hover {
    background: var(--primary);
    color: #ffffff !important;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.contact-map-wrap {
    width: 100%;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid #edf2f7;
    margin-top: 40px;
    margin-bottom: 60px;
}

.contact-map-iframe {
    width: 100%;
    height: 420px;
    border: 0;
    display: block;
}

.contact-map-card {
    height: 100%;
    min-height: 450px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid #edf2f7;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: #334155;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text);
    background: #ffffff;
    transition: var(--transition);
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(15, 117, 189, 0.15);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.btn-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px 28px;
    background: var(--primary);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-btn, 8px);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(15, 117, 189, 0.25);
}

.btn-submit:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 117, 189, 0.35);
}

.contact-info, .sidebar-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.hotline-num {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    margin-top: 8px;
    transition: var(--transition);
}

.form-row-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

@media (max-width: 991px) {
    .contact-grid {
        grid-template-columns: 1fr !important;
    }
    .contact-cards-4col {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .contact-cards-4col,
    .form-row-2col,
    .contact-form-box form > div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }
    .contact-form-box {
        padding: 24px 18px;
    }
}