section {
    padding: 3rem 0;
    position: relative;
}

.section_about_info {
    padding: 5rem 0 3rem 0;
}

.section_corevalue {
    background-color: #ffffff54;
}

.line_height_4 {
    margin-top: 12px;
}

.flex>h3 {
    margin-top: 8px;
    font-size: 18px;
}

.mt_1rem {
    margin-top: 1rem;
}

.mt_3rem {
    margin-top: 3rem;
}

.fw_500 {
    font-weight: 500;
}

.fw_400 {
    font-weight: 400;
}

.text_jtf {
    text-align: justify;
}

.size_14 {
    font-size: 14px;
    font-weight: 400;
}

.bg_white {
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.5));
}


.overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.1), rgba(30, 58, 138, 0.7));
    z-index: 0;
}

.about-info-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

.form_contact {
    background-image: url('../images/bg-ourhistory.jpg');
    background-position: center;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 3rem 0;
}

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

.title {
    text-align: center;
    margin-bottom: 2.25rem;
}

.grid_item {
    padding: .5rem;
    border: 1px solid #9999997b;
    border-radius: 8px;
    text-align: center;
    background-color: #fff;
    width: 100%;
}

.pad_24 {
    padding: 24px;
}

.pad_12 {
    padding: 12px 0px;
}

.gap_15 {
    gap: 1.5rem;
}

.border_1rem {
    border-radius: 1rem;
}

.mb_1rem {
    margin-bottom: 1rem;
}

.item_img,
.item_img img {
    width: 100%;
    border-radius: 8px;
}

.max_100 {
    max-width: 100px;
}

.flex_item {
    gap: 0;
}

.font-24 {
    font-size: 24px !important;
}

.no-background {
    background-color: transparent;
}

.grid_3 {
    grid-template-columns: repeat(1, 1fr);
    width: 100%;
    gap: 1.5rem;
}

.bridging-name {
    font-size: 18px;
    font-weight: 500;
}

/* CONTACT */

.flex_contact {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.content_box {
    width: 100%;
    flex: 4 4 0%;
    color: #fff;
    max-width: 720px;
    text-align: center;
}

/* HISTORY */
.history {
    background-image: url('../images/history.jpg');
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    min-height: 100vh;
}

.content_history {
    position: relative;
    padding-left: 2rem;
}

.color-white {
    color: #fff !important;
}

.grid_2 {
    grid-template-columns: 1fr;
    position: relative;
    gap: 0;
}

.grid_history {
    grid-template-columns: repeat(2, 1fr);
    position: relative;
}

.grid_2::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: -1.5rem;
    width: 2px;
    background: linear-gradient(to bottom, #0148B9, #002981);
    z-index: 0;
}

.grid_2 .circle {
    position: absolute;
    left: -36px;
    top: 50%;
    width: 1.75rem;
    height: 1.75rem;
    background: #3b82f6;
    border: 4px solid #fff;
    border-radius: 50%;
    z-index: 1;
    overflow: visible;
}

.grid_2 .circle::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.6);
    z-index: -1;
    animation: ripple 1s ease-out infinite;
}

/* Animation vòng tròn lan ra */
@keyframes ripple {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }

    70% {
        transform: scale(2.5);
        opacity: 0;
    }

    100% {
        transform: scale(2.5);
        opacity: 0;
    }
}

.box_item {
    display: block;
    background-color: var(--color-main);
    color: #fff;
    padding: 1.5rem;
    border-radius: 12px;
}

.item_head {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 12px;
}

.item_head_reverse {
    flex-direction: row-reverse;
}

.item_text_left {
    text-align: left !important;
}

.font_ligth {
    font-weight: lighter;
}

.item_text {
    font-size: 1.25rem;
    font-weight: bold;
    text-align: left;
}

.item_text h3 {
    font-size: 20px;
}

.item_2 {
    grid-column: 2;
}

.item_2>.item_text {
    text-align: left;
}

/* WORK */

.title_work {
    width: 100%;
    text-align: center;
    margin-bottom: 2.5rem;
}

/* ------------------------------------------------------- */
.stars-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
    overflow: hidden;
}

.star {
    position: absolute;
    background-color: rgba(100, 200, 255, 0.9);
    border-radius: 50%;
    animation: falling linear infinite;
    opacity: 0;
    filter: drop-shadow(0 0 5px rgba(100, 200, 255, 0.9));
}

.star-small {
    width: 3px;
    height: 3px;
    animation-duration: 8s;
}

.star-medium {
    width: 5px;
    height: 5px;
    animation-duration: 10s;
}

.star-large {
    width: 7px;
    height: 7px;
    animation-duration: 12s;
}

.delay-1 {
    animation-delay: 2s;
}

.delay-2 {
    animation-delay: 4s;
}

.delay-3 {
    animation-delay: 6s;
}

@keyframes falling {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(calc(100vh + 100px)) rotate(360deg);
        opacity: 0;
    }
}

/* --------------------------- BRING --------------------------- */
.section_bring {
    padding: 6rem 0 3rem 0;
}

.bridging_header {
    display: flex;
    flex-direction: column;
    text-align: center;
    margin-bottom: 2.25rem;
}

.bridging-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.bridging-title,
.bridging-desc {
    width: 100%;
}

.bridging-item {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
    padding: 28px 1rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.bridging-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-width: 512px;
}

.carousel-slide {
    width: 100%;
    border-radius: 12px;
}

.carousel-slide img {
    width: 100%;
    border-radius: 12px;
}

.section_work {
    padding: 3rem 0;
}

.mobile-header.scrolled {
    height: 78px;
}

.nav-pc {
    background-image: none;
    background-color: #002980;
}

.nav-pc.scrolled {
    background-image: linear-gradient(to bottom,
            color-mix(in oklab, #040509 100%, transparent) 0%,
            color-mix(in oklab, #020204 90%, transparent) 40%,
            color-mix(in oklab, #04090d 60%, transparent) 100%);
    background-color: #00298000;
}


.mt_0 {
    margin-top: 0 !important;
}

.gap_0 {
    gap: 0 !important;
}

/* --------------------------- MEDIA --------------------------- */
@media (min-width:575px) {
    .grid_3 {
        margin-top: 2.1rem;
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }

    .grid_2 {
        grid-template-columns: repeat(2, 1fr);
        gap: 4rem;
    }

    .grid_2::before {
        content: "";
        position: absolute;
        top: 0;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 2px;
        background: linear-gradient(to bottom, #0148B9, #002981);
        z-index: 0;
    }

    .grid_2 .circle {
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        width: 1.75rem;
        height: 1.75rem;
        background: #3b82f6;
        border: 4px solid #fff;
        border-radius: 50%;
        z-index: 1;
    }

    .flex_contact {
        flex-direction: row;
    }

    .content_history {
        padding: 0;
    }

    .title_work {
        text-align: left;
    }

    .bridging_header {
        flex-direction: row;
        justify-content: space-between;
        margin-bottom: 1.875rem;
        text-align: left;
    }

    .bridging-title,
    .bridging-desc,
    .bridging-left,
    .bridging-right {
        width: 50%;
        max-width: 600px;
    }

    .bridging-content {

        flex-direction: row;
        justify-content: space-between;
        align-items: stretch;
        gap: 0;
    }

    .bridging-left {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }

    .section_bring {
        padding: 9rem 0 3rem 0;
    }

    .section {
        padding: 6rem 0;
    }

    .banner_corevalue {
        padding: 6rem 0;
    }

    .section_corevalue {
        padding: 6rem 0;
    }

    .section_about_info {
        padding: 5.25rem 0 6rem 0;
    }

    .history {
        padding: 6rem 0;
    }

    .section_work {
        padding: 6rem 0 6rem 0;
    }

    .form_contact {
        padding: 6rem 0;
    }

    .pad_12 {
        padding: 4px 0;
    }

    .content_box {
        text-align: left;
    }

    .item_text{
        text-align: right;
    }
}