/* ==========================================================================
   CSS TỐI ƯU CHO TRANG CHI TIẾT BỘ KIT DIY BAN CÔNG (VIFASO)
   ========================================================================== */

.main-wrapper-diy {
    background-color: #f8fafc;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* Breadcrumb & Header */
.diy-header-section {
    background: #f1f5f9;
    padding: 30px 5%;
    border-bottom: 1px solid #e2e8f0;
}

.diy-header-container {
    max-width: 1100px;
    margin: 0 auto;
}

.diy-breadcrumb {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 8px;
}

.diy-breadcrumb a {
    color: #64748b;
    text-decoration: none;
}

.diy-breadcrumb span {
    color: #065f46;
    font-weight: 600;
}

.diy-title {
    font-size: 28px;
    font-weight: 800;
    color: #065f46;
    margin: 0;
}

/* Nội dung chính Layout 2 cột */
.diy-content-section {
    padding: 50px 5%;
    background-color: #fff;
}

.diy-grid-layout {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: start;
}

.content-heading {
    font-size: 22px;
    font-weight: 700;
    color: #065f46;
    border-bottom: 2px solid #059669;
    padding-bottom: 8px;
    margin-bottom: 20px;
}

.content-desc {
    color: #475569;
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* Bảng danh mục thiết bị */
.spec-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 35px;
    font-size: 14px;
}

.spec-table th {
    background: #f8fafc;
    text-align: left;
    border-bottom: 2px solid #cbd5e1;
    color: #334155;
    padding: 12px;
}

.spec-table td {
    padding: 12px;
    border-bottom: 1px solid #e2e8f0;
    color: #64748b;
}

.spec-table tr:last-child td {
    border-bottom: none;
}

.spec-col-name {
    font-weight: 600;
    color: #1e293b;
}

.spec-col-qty {
    text-align: center;
    font-weight: 700;
    color: #059669;
}

/* Các bước tự lắp đặt */
.process-list-diy {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 35px;
}

.process-item-diy {
    display: flex;
    gap: 15px;
    background: #f8fafc;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #059669;
}

.process-number-diy {
    background: #059669;
    color: #fff;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.process-text-diy strong {
    color: #1e293b;
}

/* Cột phải: Sidebar Đặt mua kit */
.diy-sidebar-card {
    position: sticky;
    top: 20px;
    background: #fff;
    border: 2px solid #059669;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
}

.sidebar-badge {
    background: #f1f5f9;
    color: #475569;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
}

.sidebar-title {
    font-size: 22px;
    font-weight: 800;
    color: #065f46;
    margin: 10px 0;
}

.sidebar-price {
    font-size: 28px;
    font-weight: 800;
    color: #059669;
    margin-bottom: 15px;
}

.sidebar-price-old {
    font-size: 14px;
    color: #94a3b8;
    font-weight: 400;
    text-decoration: line-through;
}

.sidebar-benefits {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 13px;
    color: #334155;
}

.btn-register-package {
    display: block;
    text-align: center;
    background: #059669;
    color: #fff;
    padding: 12px;
    border-radius: 6px;
    font-weight: 700;
    text-decoration: none;
    font-size: 15px;
    margin-bottom: 10px;
    transition: background 0.2s;
}

.btn-register-package:hover {
    background: #047857;
}

.btn-back-link {
    display: block;
    text-align: center;
    background: #f1f5f9;
    color: #475569;
    padding: 10px;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    font-size: 13px;
    transition: background 0.2s;
}

.btn-back-link:hover {
    background: #e2e8f0;
}

/* Responsive */
@media screen and (max-width: 992px) {
    .diy-grid-layout {
        grid-template-columns: 1fr;
    }
    .diy-sidebar-card {
        position: static;
    }
}