/* ========================= */
/* VENTILATION PAGE ONLY */
/* ========================= */

.ventilation-detail {
    background: #f4f7fb;
}

.ventilation-shell {
    display: grid;
    grid-template-columns: 60px minmax(0, 1fr) 60px;
    gap: 24px;
    align-items: start;
}

.fan-nav {
    width: 52px;
    height: 52px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: #fff;
    font-size: 28px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    align-self: center;
}

.fan-nav:hover {
    transform: scale(1.08);
}

.ventilation-main {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.vent-top {
    display: grid;
    grid-template-columns: minmax(280px, 420px) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
}

.detail-img {
    min-height: 320px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 18px 40px rgba(37, 99, 235, 0.12);
}

.detail-img img {
    width: 100%;
    height: 100%;
    min-height: 320px;
    object-fit: cover;
    display: block;
}

.vent-summary {
    background: #ffffff;
    border-radius: 14px;
    padding: 28px;
    box-shadow: 0 14px 35px rgba(15, 23, 42, 0.08);
}

.vent-summary h2 {
    margin-bottom: 16px;
    color: #0f172a;
    font-size: 32px;
}

.vent-summary h3 {
    margin-bottom: 14px;
    color: #1e293b;
}

.vent-summary p {
    color: #475569;
    line-height: 1.75;
    margin-bottom: 16px;
}

.vent-bottom {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.info-card {
    background: #ffffff;
    border-radius: 14px;
    padding: 24px;
    box-shadow: 0 14px 35px rgba(15, 23, 42, 0.08);
}

.info-card h3 {
    margin-bottom: 16px;
    color: #0f172a;
    font-size: 22px;
}

.info-card p {
    color: #475569;
    line-height: 1.75;
    margin-bottom: 14px;
}

.info-card ul {
    margin: 0;
    padding-left: 20px;
    color: #475569;
    line-height: 1.75;
}

.info-card li {
    margin-bottom: 10px;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    background: #f8fafc;
    border-radius: 10px;
    overflow: hidden;
}

.spec-table td {
    padding: 12px 14px;
    border-bottom: 1px solid #dbe2ea;
    color: #334155;
    vertical-align: top;
}

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

.inquiry-btn {
    display: inline-block;
    margin-top: 10px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: 0.3s;
}

.inquiry-btn:hover {
    transform: scale(1.04);
}

@media (max-width: 1100px) {
    .ventilation-shell {
        grid-template-columns: 50px minmax(0, 1fr) 50px;
        gap: 16px;
    }

    .vent-top {
        grid-template-columns: 1fr;
    }

    .detail-img img,
    .detail-img {
        min-height: 280px;
    }

    .vent-bottom {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .ventilation-shell {
        grid-template-columns: 1fr;
    }

    .fan-nav {
        width: 46px;
        height: 46px;
        font-size: 24px;
        justify-self: center;
    }

    .fan-nav-left {
        order: 1;
    }

    .ventilation-main {
        order: 2;
    }

    .fan-nav-right {
        order: 3;
    }

    .vent-summary {
        padding: 22px;
    }

    .info-card {
        padding: 20px;
    }
}