/* ================================================
   PRODUCT HEADER
   ================================================ */
.product-header {
    background: var(--secondary-gradient);
    padding: 28px 24px;
    text-align: center;
    color: #fff;
    margin-bottom: 16px;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    width: 100%;
}

.product-category {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
}

.product-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
    line-height: 1.25;
}

.product-short-desc {
    font-size: 1.1rem;
    opacity: 0.95;
    max-width: 680px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    line-height: 1.65;
}

/* ================================================
   PRODUCT CONTENT (image + info grid)
   ================================================ */
.product-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 16px;
    width: 100%;
    align-items: start;
}

/* --- Image --- */
.product-image-section {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.product-image-wrapper {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .product-image-wrapper:hover {
        transform: translateY(-4px);
    }

.product-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 16px;
    display: block;
}

/* --- Info --- */
.product-info-section {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.info-card {
    background: #fff;
    border-radius: 16px;
    padding: 20px 26px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

    .info-card:hover {
        box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
        transform: translateY(-3px);
    }

    .info-card h3 {
        font-size: 1.25rem;
        font-weight: 700;
        color: #2d3748;
        margin: 0 0 12px 0;
        display: flex;
        align-items: center;
        gap: 8px;
    }

        .info-card h3::before {
            content: "✦";
            color: var(--primary-color);
            font-size: 1.3rem;
            flex-shrink: 0;
        }

    .info-card p {
        font-size: 0.95rem;
        margin: 0;
        color: #4a5568;
        line-height: 1.8;
        text-align: justify;
    }

/* --- Features grid --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.feature-item {
    background: #f7fafc;
    padding: 13px 14px;
    border-radius: 10px;
    border: 2px solid #e2e8f0;
    transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #4a5568;
    font-size: 0.9rem;
    line-height: 1.4;
}

    .feature-item:hover {
        border-color: var(--primary-color);
        transform: translateX(4px);
        box-shadow: 0 4px 14px rgba(30, 158, 91, 0.14);
        text-decoration: none;
        color: #2d3748;
    }

    .feature-item::before {
        content: "✓";
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 24px;
        height: 24px;
        min-width: 24px;
        background: var(--primary-gradient);
        color: #fff;
        border-radius: 50%;
        font-weight: bold;
        font-size: 0.8rem;
    }

/* --- CTA buttons --- */
.cta-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.btn-experience {
    padding: 13px 20px;
    background: var(--primary-gradient);
    color: #fff;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    border: none;
    cursor: pointer;
    text-align: center;
    box-shadow: 0 4px 15px rgba(30, 158, 91, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    -webkit-tap-highlight-color: transparent;
}

    .btn-experience::before {
        content: '🚀';
        font-size: 1rem;
        flex-shrink: 0;
    }

    .btn-experience:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 22px rgba(30, 158, 91, 0.48);
        color: #fff;
        text-decoration: none;
    }

.btn-contact {
    padding: 13px 20px;
    background: #fff;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1rem;
    transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    -webkit-tap-highlight-color: transparent;
}

    .btn-contact::before {
        content: '📞';
        font-size: 1rem;
        flex-shrink: 0;
    }

    .btn-contact:hover {
        background: var(--primary-color);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 6px 18px rgba(30, 158, 91, 0.3);
        text-decoration: none;
    }

/* ================================================
   MODULE SHOWCASE
   ================================================ */
.module-showcase {
    padding: 48px 0 36px;
    width: 100%;
}

    .module-showcase h2 {
        font-size: 1.8rem;
        font-weight: 700;
        color: #2d3748;
        margin-bottom: 28px;
        text-align: center;
    }

.modules-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.module-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    align-items: center;
}

    .module-item:nth-child(even) .module-content {
        order: 1;
    }

    .module-item:nth-child(even) .module-image-wrapper {
        order: 2;
    }

.module-image-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
}

.module-image-container {
    width: 260px;
    height: 260px;
}

.module-image-circle {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
}

    .module-image-circle img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }

.module-content-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    line-height: 1.3;
}

.module-content-desc {
    font-size: 0.95rem;
    color: #4a5568;
    line-height: 1.8;
    margin: 0;
    text-align: justify;
}

/* ================================================
   VIDEO SECTION
   ================================================ */
.video-section {
    padding: 48px 0 36px;
    width: 100%;
}

    .video-section h2 {
        font-size: 1.8rem;
        font-weight: 700;
        color: #2d3748;
        margin-bottom: 24px;
        text-align: center;
    }

        .video-section h2::before {
            content: '🎥';
            margin-right: 8px;
        }

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.14);
}

    .video-wrapper iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: none;
    }

/* ================================================
   CONSULTATION BANNER
   ================================================ */
.consultation-banner-section {
    width: 100%;
    margin-top: 20px;
    margin-bottom: 0;
}

.consultation-banner {
    background: var(--primary-gradient);
    padding: 48px 30px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 8px 28px rgba(30, 158, 91, 0.3);
}

.consultation-banner-content {
    position: relative;
    z-index: 1;
}

.consultation-banner h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 12px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.consultation-banner p {
    font-size: 1.15rem;
    margin-bottom: 24px;
    opacity: 0.95;
}

.consultation-phone {
    display: inline-block;
    background: #fff;
    color: var(--primary-color);
    padding: 14px 36px;
    border-radius: 50px;
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
    -webkit-tap-highlight-color: transparent;
}

    .consultation-phone:hover {
        transform: scale(1.05);
        box-shadow: 0 6px 22px rgba(0, 0, 0, 0.28);
        text-decoration: none;
        color: var(--primary-color);
    }

/* ================================================
   RESPONSIVE — Tablet lớn (≤ 1100px)
   ================================================ */
@media (max-width: 1100px) {
    .product-content {
        grid-template-columns: 1fr 1.5fr;
    }

    .module-image-container {
        width: 220px;
        height: 220px;
    }

    .module-content-title {
        font-size: 1.4rem;
    }
}

/* ================================================
   RESPONSIVE — Tablet (≤ 900px)
   ================================================ */
@media (max-width: 900px) {
    .product-content {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .product-image-wrapper {
        aspect-ratio: 16 / 7;
    }

    .features-grid {
        grid-template-columns: 1fr 1fr;
    }

    .cta-buttons {
        grid-template-columns: 1fr 1fr;
    }

    .module-item {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .module-image-container {
        width: 200px;
        height: 200px;
    }

    .module-content-title {
        font-size: 1.3rem;
        margin-bottom: 12px;
    }

    .consultation-banner h2 {
        font-size: 1.8rem;
    }
}

/* ================================================
   RESPONSIVE — Mobile ngang (≤ 768px)
   ================================================ */
@media (max-width: 768px) {
    .product-header {
        padding: 20px 16px;
        border-radius: 12px;
        margin-bottom: 12px;
    }

    .product-title {
        font-size: 1.55rem;
    }

    .product-short-desc {
        font-size: 0.95rem;
    }

    .product-image-section {
        padding: 16px;
        border-radius: 12px;
    }

    .info-card {
        padding: 16px 18px;
        border-radius: 12px;
    }

    .info-card h3 {
        font-size: 1.1rem;
    }

    .info-card p {
        font-size: 0.9rem;
        line-height: 1.7;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .feature-item {
        font-size: 0.85rem;
        padding: 11px 12px;
    }

    .cta-buttons {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .btn-experience,
    .btn-contact {
        padding: 13px 16px;
        font-size: 0.95rem;
        border-radius: 10px;
    }

    .module-showcase {
        padding: 36px 0 28px;
    }

    .module-showcase h2 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }

    .module-item {
        grid-template-columns: 1fr;
        gap: 16px;
        text-align: center;
    }

        .module-item:nth-child(even) .module-content,
        .module-item:nth-child(even) .module-image-wrapper {
            order: initial;
        }

    .module-image-container {
        width: 170px;
        height: 170px;
    }

    .module-content-title {
        font-size: 1.15rem;
        margin-bottom: 10px;
        letter-spacing: 0.3px;
    }

    .module-content-desc {
        font-size: 0.88rem;
        text-align: center;
        line-height: 1.7;
    }

    .video-section {
        padding: 36px 0 28px;
    }

    .video-section h2 {
        font-size: 1.5rem;
        margin-bottom: 18px;
    }

    .consultation-banner {
        padding: 36px 20px;
        border-radius: 12px;
    }

    .consultation-banner h2 {
        font-size: 1.6rem;
        margin-bottom: 10px;
    }

    .consultation-banner p {
        font-size: 1rem;
        margin-bottom: 18px;
    }

    .consultation-phone {
        padding: 12px 28px;
        font-size: 1.1rem;
    }
}

/* ================================================
   RESPONSIVE — Mobile nhỏ (≤ 480px)
   ================================================ */
@media (max-width: 480px) {
    .product-header {
        padding: 16px 12px;
        border-radius: 10px;
    }

    .product-category {
        font-size: 0.75rem;
        padding: 3px 14px;
        margin-bottom: 6px;
    }

    .product-title {
        font-size: 1.3rem;
        margin-bottom: 6px;
    }

    .product-short-desc {
        font-size: 0.88rem;
    }

    .product-image-section {
        padding: 12px;
    }

    .product-image {
        padding: 10px;
    }

    .info-card {
        padding: 14px 15px;
        border-radius: 10px;
    }

    .info-card h3 {
        font-size: 1rem;
        margin-bottom: 10px;
    }

        .info-card h3::before {
            font-size: 1.1rem;
        }

    .info-card p {
        font-size: 0.85rem;
    }

    .feature-item {
        font-size: 0.8rem;
        padding: 10px 11px;
        border-radius: 8px;
    }

        .feature-item::before {
            width: 20px;
            height: 20px;
            min-width: 20px;
            font-size: 0.72rem;
        }

    .btn-experience,
    .btn-contact {
        padding: 12px 14px;
        font-size: 0.88rem;
        border-radius: 10px;
    }

    .module-showcase {
        padding: 28px 0 20px;
    }

    .module-showcase h2 {
        font-size: 1.25rem;
        margin-bottom: 16px;
    }

    .modules-list {
        gap: 18px;
    }

    .module-item {
        gap: 12px;
    }

    .module-image-container {
        width: 130px;
        height: 130px;
    }

    .module-content-title {
        font-size: 1rem;
        margin-bottom: 8px;
        letter-spacing: 0;
    }

    .module-content-desc {
        font-size: 0.82rem;
    }

    .video-section {
        padding: 28px 0 20px;
    }

    .video-section h2 {
        font-size: 1.25rem;
        margin-bottom: 16px;
    }

    .video-wrapper {
        border-radius: 8px;
    }

    .consultation-banner {
        padding: 28px 16px;
        border-radius: 10px;
    }

    .consultation-banner h2 {
        font-size: 1.3rem;
    }

    .consultation-banner p {
        font-size: 0.9rem;
        margin-bottom: 14px;
    }

    .consultation-phone {
        padding: 11px 22px;
        font-size: 1rem;
        border-radius: 40px;
    }
}

/* ================================================
   RESPONSIVE — Mobile rất nhỏ (≤ 360px)
   ================================================ */
@media (max-width: 360px) {
    .product-title {
        font-size: 1.15rem;
    }

    .product-short-desc {
        font-size: 0.82rem;
    }

    .btn-experience,
    .btn-contact {
        font-size: 0.82rem;
        padding: 11px 10px;
    }

    .module-image-container {
        width: 110px;
        height: 110px;
    }

    .module-content-title {
        font-size: 0.95rem;
    }

    .consultation-banner h2 {
        font-size: 1.15rem;
    }

    .consultation-phone {
        font-size: 0.9rem;
        padding: 10px 18px;
    }
}