/* ============================================================================
   ABOUT US PAGE - Structured like index.css
   ============================================================================ */

/* Global */
.about-us {
    background-color: var(--background);
    width: 100%;
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.about-us .hero-section {
    position: relative;
    width: 100%;
    background-image: url(../images/rung-ngap-man-vam-sat-2-2.png);
    background-size: cover;
    background-position: 50% 50%;
    padding: 4.1667em 0 7.5em;
}

.about-us .hero-section::before {
    content: "";
    position: absolute;
    background-color: #06243D;
    opacity: 0.9;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.about-us .hero-content {
    padding-top: 5.8333em;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.8333em;
    width: 50%;
}

.about-us .hero-text {
    display: flex;
    flex-direction: column;
    gap: 1em;
    position: relative;
    flex: 0 0 auto;
    padding-right: 2.0833em;
}

.about-us .hero-title {
    position: relative;
    align-self: stretch;
    font-family: var(--h1-font-family);
    font-weight: var(--h1-font-weight);
    color: var(--pure);
    font-size: var(--h1-font-size);
    letter-spacing: var(--h1-letter-spacing);
    line-height: var(--h1-line-height);
    font-style: var(--h1-font-style);
}

.about-us .hero-subtitle {
    position: relative;
    font-family: var(--h3-font-family);
    font-weight: var(--h3-font-weight);
    color: var(--white);
    font-size: var(--h3-font-size);
    letter-spacing: var(--h3-letter-spacing);
    line-height: var(--h3-line-height);
    font-style: var(--h3-font-style);
}

.about-us .hero-desc {
    position: relative;
    font-family: var(--text-1-regular-font-family);
    font-weight: var(--text-1-regular-font-weight);
    color: var(--white);
    font-size: var(--text-2-regular-font-size);
    letter-spacing: var(--text-1-regular-letter-spacing);
    line-height: 1.4;
    font-style: var(--text-1-regular-font-style);
}

.about-us .hero-buttons {
    display: inline-flex;
    align-items: center;
    gap: 0.6667em;
    position: relative;
    flex: 0 0 auto;
}

.about-us .hero-image-wrapper {
    padding-top: 3.3333em;
    padding-left: 6.2500em;
    width: 50%;
}

.about-us .hero-image {
    object-fit: cover;
    width: 100%;
    height: 31.7500em;
}

.about-us .hero-image-2 {
    width: 100%;
    height: auto;
    object-fit: cover;
    margin-top: 0.8333em;
}

/* Buttons (shared) */
.about-us .btn.btn-primary {
    all: unset;
    box-sizing: border-box;
    display: flex;
    width: 7.5417em;
    height: 2.4167em;
    align-items: center;
    justify-content: center;
    gap: 0.4167em;
    padding: 0.4167em 0.6667em;
    position: relative;
    background-color: var(--secondarysecondary-700);
}

.about-us .btn.btn-primary:hover {
    background-color: #DEC170;
}

.about-us .btn.btn-secondary {
    all: unset;
    box-sizing: border-box;
    display: inline-flex;
    height: 2.4167em;
    align-items: center;
    justify-content: center;
    gap: 0.4167em;
    padding: 0.4167em 0.6667em;
    position: relative;
    flex: 0 0 auto;
    border: 1px solid;
    border-color: #ffffff;
}

.about-us .btn.btn-secondary:hover {
    border-color: var(--secondarysecondary-700);
}

.about-us .btn.btn-secondary:hover .btn-text-secondary {
    color: var(--secondarysecondary-700);
}

.about-us .btn-text {
    position: relative;
    width: fit-content;
    font-family: var(--subtitle-font-family);
    font-weight: var(--subtitle-font-weight);
    color: #ffffff;
    font-size: var(--subtitle-font-size);
    letter-spacing: var(--subtitle-letter-spacing);
    line-height: var(--subtitle-line-height);
    white-space: nowrap;
    font-style: var(--subtitle-font-style);
}

.about-us .btn-text-secondary {
    position: relative;
    width: fit-content;
    font-family: var(--subtitle-font-family);
    font-weight: var(--subtitle-font-weight);
    color: var(--white);
    font-size: var(--subtitle-font-size);
    letter-spacing: var(--subtitle-letter-spacing);
    line-height: var(--subtitle-line-height);
    white-space: nowrap;
    font-style: var(--subtitle-font-style);
}

/* ============================================================================
   MISSION SECTION
   ============================================================================ */

.about-us .mission-section {
    position: relative;
    width: 100%;
    padding: 4.1667em 0 18.3333em;
    z-index: 1;
}

.about-us .mission-bg {
    position: absolute;
    top: -3.7500em;
    left: 0;
    width: 100%;
    height: 36.8750em;
    object-fit: cover;
    z-index: 1;
}

.about-us .mission-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 37.5em;
    margin: 0 auto;
}

.about-us .mission-title {
    font-family: var(--h1-font-family);
    font-weight: var(--h1-font-weight);
    font-size: var(--h1-font-size);
    color: var(--white);
    margin-bottom: 1.2500em;
}

.about-us .mission-text {
    font-family: var(--text-1-regular-font-family);
    font-weight: var(--text-1-regular-font-weight);
    color: var(--white);
    font-size: var(--text-1-regular-font-size);
    line-height: 1.6;
}

.about-us .mission-text .highlight {
    color: var(--secondarysecondary-700);
    font-weight: 700;
}

/* ============================================================================
   TEAM SECTION
   ============================================================================ */

.about-us .team-section {
    position: relative;
    padding: 4.1667em 0;
    z-index: 1;
}

.about-us .team-header {
    text-align: center;
    margin-bottom: 2.5em;
}

.about-us .team-title {
    font-family: var(--h1-font-family);
    font-weight: var(--h1-font-weight);
    color: var(--pure);
    font-size: var(--h1-font-size);
    margin-bottom: 0.8333em;
}

.about-us .team-subtitle {
    font-family: var(--text-1-regular-font-family);
    font-weight: var(--text-1-regular-font-weight);
    color: var(--white);
    font-size: var(--text-1-regular-font-size);
    max-width: 33.3333em;
    margin: 0 auto;
}

.about-us .team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.about-us .team-card {
    background-color: var(--primaryprimary-800);
    position: relative;
}

.about-us .team-card.focus {
    margin-top: -1.2500em;
    margin-bottom: -1.2500em;
}

.about-us .team-image {
    width: 100%;
    padding: 50% 0;
    position: relative;
}

.about-us .team-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-us .team-image:after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2em;
    width: 100%;
    background: linear-gradient(0deg, #07151f, transparent);
    z-index: 1;
}

.about-us .team-body {
    padding: 1.2500em 0.8333em;
}

.about-us .team-name {
    font-family: var(--h3-font-family);
    font-weight: var(--h3-font-weight);
    color: var(--white);
    font-size: var(--h3-font-size);
    margin-bottom: 0.3333em;
}

.about-us .team-role {
    font-family: var(--text-2-bold-font-family);
    font-weight: var(--text-2-bold-font-weight);
    color: var(--secondarysecondary-700);
    font-size: var(--text-2-bold-font-size);
    margin-bottom: 0.6667em;
}

.about-us .team-desc {
    font-family: var(--text-2-regular-font-family);
    font-weight: var(--text-2-regular-font-weight);
    color: var(--white);
    font-size: var(--text-2-regular-font-size);
    line-height: 1.5;
}

/* ============================================================================
   ACHIEVEMENTS SECTION
   ============================================================================ */

.about-us .achievements-section {
    position: relative;
    padding: 4.1667em 0;
}

.about-us .achievements-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: bottom;
    z-index: 0;
}

.about-us .achievements-header {
    position: relative;
    z-index: 1;
    text-align: center;
    margin-bottom: 2.5em;
}

.about-us .achievements-title {
    font-family: var(--h1-font-family);
    font-weight: var(--h1-font-weight);
    color: var(--pure);
    font-size: var(--h1-font-size);
    margin-bottom: 0.8333em;
}

.about-us .achievements-subtitle {
    font-family: var(--text-1-regular-font-family);
    font-weight: var(--text-1-regular-font-weight);
    color: var(--white);
    font-size: var(--text-1-regular-font-size);
}

.about-us .achievements-grid {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: row;
    gap: 1.2500em;
}

.about-us .achievement-card {
    display: flex;
    flex: 1;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8333em;
    background-color: var(--primaryprimary-200);
    padding: 1.2500em;
    border-radius: 0.3333em;
}

.about-us .achievement-icon {
    width: 100%;
    height: 13.7500em;
}

.about-us .achievement-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-us .achievement-body {
    flex: 1;
}

.about-us .achievement-title {
    font-family: var(--h5-font-family);
    font-weight: var(--h5-font-weight);
    color: var(--background);
    font-size: var(--h5-font-size);
    margin-bottom: 0.5em;
}

.about-us .achievement-desc {
    font-family: var(--text-2-regular-font-family);
    font-weight: var(--text-2-regular-font-weight);
    color: var(--black);
    font-size: var(--text-2-regular-font-size);
    line-height: 1.5;
}

/* ============================================================================
   VALUES SECTION
   ============================================================================ */

.about-us .values-section {
    position: relative;
    padding: 3.5em 0;
    background-color: var(--pure);
    background-image: url(../images/mask-group-2.png?v=1);
    background-repeat: no-repeat;
    background-size: contain;
    background-position: right;
}

.about-us .values-bg {
    display: none;
    position: relative;
    padding: 60% 0;
    width: 100%;
}

.about-us .values-bg img {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    z-index: 0;
}

.about-us .values-title {
    position: relative;
    z-index: 1;
    font-family: var(--h1-font-family);
    font-weight: var(--h1-font-weight);
    color: var(--background);
    font-size: var(--h1-font-size);
    margin-bottom: 2em;
}

.about-us .values-grid {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.6667em;
}

.about-us .value-card {
    display: flex;
    align-items: center;
    gap: 1em;
}

.about-us .value-icon {
    width: 2.5em;
    height: 2.5em;
    flex-shrink: 0;
}

.about-us .value-body {
    flex: 1;
}

.about-us .value-title {
    font-family: var(--h5-font-family);
    font-weight: var(--h5-font-weight);
    color: var(--background);
    font-size: var(--h5-font-size);
    margin-bottom: 0.3333em;
}

.about-us .value-desc {
    font-family: var(--text-2-regular-font-family);
    font-weight: var(--text-2-regular-font-weight);
    color: var(--background);
    font-size: var(--text-2-regular-font-size);
}

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

/* Desktop nhỏ: 1200px trở xuống */
@media screen and (max-width: 1200px) {

    .about-us .hero-content {
        width: 100%;
    }

    .about-us .hero-text {
        padding-right: 0;
    }

    .about-us .hero-image-wrapper {
        width: 100%;
        padding-left: 0;
    }

    .about-us .hero-image {
        object-position: top;
    }

    .about-us .values-section {
        background-position: 140% 0;
        padding: 2em 0;
    }

    .about-us .values-grid {
        width: 100%;
    }

    .about-us .values-title {
        margin-bottom: 1em;
    }

    .about-us .mission-section {
        padding: 1em 0 19em;
    }

    .about-us .achievement-icon {
        height: 0;
        padding: 30%;
        position: relative;
    }

    .about-us .achievement-icon img {
        position: absolute;
        top: 0;
        left: 0;
    }
}

/* Tablet: 1024px trở xuống */
@media (max-width: 1023px) {

    .about-us .hero-content {
        padding-top: 4em;
    }

    .about-us .team-grid,
    .about-us .achievements-grid {
        gap: 1.2500em;
        display: flex;
        flex-direction: column;
    }

    .about-us .values-grid {
        grid-template-columns: 1fr;
    }

    .about-us .team-card {
        order: 2;
    }

    .about-us .team-card.focus {
        order: 1;
        margin: 0;
    }

    .about-us .values-section {
        background-position: calc(100% + 210px) 0;
    }

    .about-us .values-grid {
        width: 70%;
    }

    .about-us .hero-title,
    .about-us .mission-title,
    .about-us .team-title,
    .about-us .values-title,
    .about-us .achievements-title {
        font-size: 2em;
    }

    .about-us .hero-desc,
    .about-us .mission-text,
    .about-us .team-subtitle,
    .about-us .team-desc,
    .about-us .value-desc,
    .about-us .achievements-subtitle,
    .about-us .achievement-desc {
        font-size: 0.8333em;
    }

    .about-us .hero-subtitle,
    .about-us .value-title,
    .about-us .achievement-title {
        font-size: 1.2em;
    }
}


/* Mobile: 992px trở xuống */
@media (max-width: 992px) {

    .about-us .values-section {
        background-image: none;
    }

    .about-us .values-bg {
        display: block;
    }

    .about-us .values-grid {
        width: 100%;
    }
}

/* Mobile: 768px trở xuống */
@media (max-width: 768px) {

    section>.container>.row {
        flex-direction: column;
    }

    .about-us .hero-section {
        padding: 4.1667em 0 2.5em;
    }

    .about-us .hero-content,
    .about-us .hero-image-wrapper {
        width: 100%;
    }

    .about-us .hero-buttons {
        width: 100%;
        justify-content: center;
    }

    .about-us .team-grid,
    .about-us .achievements-grid {
        grid-template-columns: 1fr;
    }

    .about-us .achievement-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 0.5em;
    }
}