/* ================================
   ROOT (THEO FILE CHUẨN CỦA BẠN)
================================ */

:root {
    --id4-font-main: 'Open Sans';
    --id4-font-weight-big-bold: 900;
    --id4-font-weight-small-bold: 700;
    --id4-font-weight-title: 600;
    --id4-font-weight-desript: 400;
    --id4-container-color-xam: #f5f5f7;
    --id4-button-color: #2e3192;
    --id4-bordrer-color: #2e3192;
    --id4-unit: 1rem;
    --id4-font-size-title: calc(var(--id4-unit) * 2);
    --id4-font-size-desription: calc(var(--id4-unit) * 1);
    --id4-font-size-button: calc(var(--id4-unit) * 0.875);
    --id4-container-width: calc(var(--id4-unit) * 68.75);
    --id4-header-height: calc(var(--id4-unit) * 5);
    --id4-spacing-block: calc(var(--id4-unit) * 2.5);
    --id4-spacing-sm: calc(var(--id4-unit) * 0.5);
    --id4-spacing-md: calc(var(--id4-unit) * 1);
    --id4-spacing-lg: calc(var(--id4-unit) * 2);
    --id4-color-text-title: #2e3192;
    --id4-color-text-desription: #000000;
    --id4-border-radius-card: calc(var(--id4-unit) * 1.75);
    --id4-border-radius-card-small: calc(var(--id4-unit) * 1);
    --id4-text-indent: calc(var(--id4-unit) * 1.5625);
    --arrow-width: calc(var(--id4-unit) * 2.5);
    --arrow-height: calc(var(--id4-unit) * 2.1875);
    --arrow-border-width: 3px;
    --id4-padding-height-button: calc(var(--id4-unit) * 0.625);
    --id4-padding-width-button: calc(var(--id4-unit) * 2.5);
    --id4-gap: calc(var(--id4-unit) * 1.25);
    --id4tv-shadow: 0 calc(var(--id4-unit) * 0.625) calc(var(--id4-unit) * 0.625) rgba(0, 0, 0, .10);
    /* ==== STATS UI (theo ảnh) ==== */
    --id4-stats-bg: #ffffff;
    --id4-stats-sep: rgba(0, 0, 0, 0.10);
    --id4-stats-radius: calc(var(--id4-unit) * 0.75);
    --id4-stats-padding-y: calc(var(--id4-unit) * 0.9);
    --id4-stats-padding-x: calc(var(--id4-unit) * 1.0);
    --id4-stats-number-size: calc(var(--id4-unit) * 1.5);
    /* số lớn như ảnh */
    --id4-stats-label-size: calc(var(--id4-unit) * 0.85);
    /* chữ nhỏ */
}

@media (max-width: 768px) {
    :root {
        --id4-unit: 0.9375rem;
    }
}

@media (min-width: 1536px) {
    :root {
        --id4-unit: 1.0625rem;
    }
}


/* ================================
   iD-4 GIỚI THIỆU - FULL CSS
================================ */


/* === CORE RESET & BASE STYLES === */

.iD-4-gioi-thieu-wrapper * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}


/* ===== BACKGROUND DESKTOP + TABLET ===== */

.iD-4-gioi-thieu-wrapper {
    background-image: url("http://id4.diamondbone.com/wp-content/uploads/2026/01/Artboard-4-6@2x.png");
    background-repeat: no-repeat;
    background-position: center bottom !important;
    background-size: 100% auto;
    width: 100%;
    overflow-x: hidden;
    padding: var(--id4-header-height) 20px 20px 20px;
}


/* ===== BACKGROUND MOBILE ===== */

@media (max-width: 768px) {
    .iD-4-gioi-thieu-wrapper {
        background-image: url("http://id4.diamondbone.com/wp-content/uploads/2026/01/bg-mobile.png");
        background-repeat: no-repeat;
        background-position: center bottom;
        background-size: cover;
        width: 100%;
        overflow-x: hidden;
        padding: 80px 20px;
    }
}

.iD-4-gioi-thieu-container {
    max-width: var(--id4-container-width);
    margin: 0 auto;
}


/* === TYPOGRAPHY === */

.iD-4-gioi-thieu-main-title {
    font-family: var(--id4-font-main);
    color: var(--id4-color-text-title);
    font-size: var(--id4-font-size-title);
    font-weight: var(--id4-font-weight-title);
    text-align: center;
    text-transform: uppercase;
    margin-bottom: var(--id4-spacing-block);
}

.iD-4-gioi-thieu-sub-heading {
    font-family: var(--id4-font-main);
    color: var(--id4-color-text-title);
    font-size: var(--id4-font-size-title);
    font-weight: var(--id4-font-weight-title);
    margin-bottom: var(--id4-spacing-sm);
    margin-top: var(--id4-spacing-lg);
}

.iD-4-gioi-thieu-sub-heading:first-of-type {
    margin-top: 0;
}

.iD-4-gioi-thieu-paragraph {
    font-family: var(--id4-font-main);
    font-size: var(--id4-font-size-desription);
    color: var(--id4-color-text-desription);
    margin-bottom: var(--id4-spacing-md);
    text-align: justify;
    text-indent: var(--id4-text-indent);
    word-break: break-word;
    overflow-wrap: anywhere;
}

.iD-4-gioi-thieu-quote {
    font-style: italic;
    border-left: var(--arrow-border-width) solid var(--id4-button-color);
    background: var(--id4-container-color-xam);
    color: var(--id4-color-text-desription);
    font-size: var(--id4-font-size-desription);
    text-indent: var(--id4-text-indent);
    text-align: justify;
    padding: var(--id4-spacing-md);
    border-radius: 0 var(--id4-border-radius-card-small) var(--id4-border-radius-card-small) 0;
    margin: var(--id4-spacing-md) 0;
    word-break: break-word;
    overflow-wrap: anywhere;
}


/* === MAIN LAYOUT (FLEXBOX) === */

.iD-4-gioi-thieu-content-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--id4-spacing-block);
    align-items: flex-start;
}

.iD-4-gioi-thieu-text-col {
    flex: 1 1 45%;
    min-width: calc(var(--id4-unit) * 20);
}

.iD-4-gioi-thieu-image-col {
    flex: 1 1 45%;
    min-width: calc(var(--id4-unit) * 20);
    position: relative;
    min-height: calc(var(--id4-unit) * 40.625);
    padding: var(--id4-spacing-md);
}


/* =========================================================
   STATS SECTION (THEO GIAO DIỆN ẢNH: 3 CỘT + VẠCH NGĂN)
========================================================= */


/* Row dạng “thanh” như ảnh */

.iD-4-gioi-thieu-stats-row {
    margin-top: var(--id4-spacing-block);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
    /* background: var(--id4-stats-bg); */
    /* border-radius: var(--id4-stats-radius); */
    /* box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06); */
    overflow: hidden;
}


/* Mỗi item canh giữa, số trên - chữ dưới */

.iD-4-gioi-thieu-stat-item {
    font-family: var(--id4-font-main);
    padding: var(--id4-stats-padding-y) var(--id4-stats-padding-x);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: calc(var(--id4-spacing-sm) * 0.35);
    position: relative;
}


/* Vạch ngăn giữa các cột */


/* .iD-4-gioi-thieu-stat-item:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 18%;
    bottom: 18%;
    right: 0;
    width: 1px;
    background: var(--id4-stats-sep);
} */


/* Số lớn màu xanh */

.iD-4-gioi-thieu-stat-number {
    color: var(--id4-color-text-title);
    font-size: var(--id4-stats-number-size);
    font-weight: var(--id4-font-weight-big-bold);
    line-height: 1.1;
    white-space: nowrap;
}


/* Chữ nhỏ bên dưới */

.iD-4-gioi-thieu-stat-label {
    font-family: var(--id4-font-main);
    font-size: var(--id4-stats-label-size);
    color: var(--id4-color-text-desription);
    font-weight: var(--id4-font-weight-small-bold);
    line-height: 1.2;
    white-space: nowrap;
    /* giống ảnh: 1 dòng */
}


/* === COMPLEX IMAGE LAYOUT STYLES (DESKTOP) === */

.iD-4-gioi-thieu-img-card {
    position: absolute;
    border-radius: var(--id4-border-radius-card-small);
    overflow: hidden;
    box-shadow: var(--id4tv-shadow);
    background: #fff;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.iD-4-gioi-thieu-img-card:hover {
    transform: translateY(calc(var(--id4-unit) * -0.3125)) scale(1.01);
    box-shadow: 0 calc(var(--id4-unit) * 1.25) calc(var(--id4-unit) * 2.5) rgba(0, 0, 0, 0.2);
}

.iD-4-gioi-thieu-img-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.iD-4-gioi-thieu-img-1 {
    width: 60%;
    aspect-ratio: 16/10;
    top: 0;
    left: 0;
    z-index: 10;
}

.iD-4-gioi-thieu-img-1:hover {
    z-index: 11;
}

.iD-4-gioi-thieu-img-2 {
    width: 70%;
    aspect-ratio: 4/3;
    top: 22%;
    right: 0;
    border: calc(var(--id4-unit) * 0.125) solid #fff;
    z-index: 20;
}

.iD-4-gioi-thieu-img-2:hover {
    z-index: 21;
}

.iD-4-gioi-thieu-img-3 {
    width: 58%;
    aspect-ratio: 16/10;
    bottom: 26%;
    left: 5%;
    background-color: #1a1a1a;
    border: calc(var(--id4-unit) * 0.125) solid #fff;
    z-index: 30;
}

.iD-4-gioi-thieu-img-3:hover {
    z-index: 31;
}

.iD-4-gioi-thieu-dots-pattern {
    position: absolute;
    bottom: 10%;
    right: 18%;
    width: calc(var(--id4-unit) * 9.375);
    height: calc(var(--id4-unit) * 12.5);
    z-index: 1;
    background-image: radial-gradient(var(--id4-button-color) calc(var(--id4-unit) * 0.15625), transparent calc(var(--id4-unit) * 0.15625));
    background-size: calc(var(--id4-unit) * 1.25) calc(var(--id4-unit) * 1.25);
    opacity: 0.7;
}


/* =========================
   RESPONSIVE
========================= */


/* Tablet (<= 1024px) */

@media (max-width: 1024px) {
    .iD-4-gioi-thieu-image-col {
        min-height: calc(var(--id4-unit) * 34.375);
        padding: var(--id4-spacing-sm);
    }

    /* stats vẫn 3 cột, nhưng chữ nhỏ hơn nhẹ */
    .iD-4-gioi-thieu-stat-number {
        font-size: calc(var(--id4-stats-number-size) * 0.95);
    }

    .iD-4-gioi-thieu-stat-label {
        font-size: calc(var(--id4-stats-label-size) * 0.95);
    }
}


/* Mobile & Tablet nhỏ (<= 768px) */

@media (max-width: 768px) {
    .iD-4-gioi-thieu-content-row {
        flex-direction: column;
        gap: var(--id4-spacing-lg);
    }

    .iD-4-gioi-thieu-image-col {
        order: -1;
        position: static;
        flex: auto;
        width: 100%;
        min-height: auto;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: var(--id4-gap);
        margin-bottom: var(--id4-spacing-sm);
    }

    .iD-4-gioi-thieu-text-col {
        flex: auto;
        width: 100%;
        min-width: auto;
    }

    .iD-4-gioi-thieu-img-card {
        position: static;
        width: 100%;
        aspect-ratio: 16/9;
        box-shadow: var(--id4tv-shadow);
        border: none;
        z-index: auto !important;
        transform: none;
    }

    .iD-4-gioi-thieu-img-card:hover {
        transform: none;
        box-shadow: var(--id4tv-shadow);
    }

    .iD-4-gioi-thieu-dots-pattern {
        display: none;
    }

    /* Stats: vẫn giữ 3 cột 1 hàng như ảnh */
    .iD-4-gioi-thieu-stats-row {
        grid-template-columns: repeat(3, 1fr);
    }

    /* chữ co lại để không vỡ layout */
    .iD-4-gioi-thieu-stat-number {
        font-size: calc(var(--id4-stats-number-size) * 0.9);
    }

    .iD-4-gioi-thieu-stat-label {
        font-size: calc(var(--id4-stats-label-size) * 0.9);
    }
}


/* Mobile nhỏ (<= 480px) */

@media (max-width: 480px) {

    .iD-4-gioi-thieu-paragraph,
    .iD-4-gioi-thieu-quote {
        text-indent: 0;
    }

    /* nếu màn quá hẹp: cho label tự xuống dòng (tránh tràn) */
    .iD-4-gioi-thieu-stat-label {
        white-space: normal;
    }

    .iD-4-gioi-thieu-stat-number {
        font-size: calc(var(--id4-stats-number-size) * 0.85);
    }

    .iD-4-gioi-thieu-stat-label {
        font-size: calc(var(--id4-stats-label-size) * 0.9);
    }

    /* vạch ngăn mềm hơn */
    .iD-4-gioi-thieu-stat-item:not(:last-child)::after {
        top: 22%;
        bottom: 22%;
    }
}