.panel--about {
    position: relative;
    overflow: hidden;
    background-image:
        url("https://dictech.vn/wp-content/uploads/2021/07/bg-o2-min.png.webp"),
        linear-gradient(77deg, rgba(223, 236, 232, 1) 0%, rgba(216, 234, 216, 1) 50%, rgba(223, 236, 232, 1) 100%);
    background-size: cover, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
    padding-left: 0;
    padding-right: 0;
    --imprint-map-layer-size: calc(var(--imprint-map-zoom, 120%) * 0.78);
    --imprint-hover-scale: 1.3;
}

.panel--about::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(circle at 10% 0%, rgba(var(--color-accent-rgb), 0.12), transparent 42%);
    z-index: 0;
}

.imprint {
    position: relative;
    z-index: 2;
    width: 100%;
    min-height: clamp(520px, 70vh, 800px);
}

.imprint__grid {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    min-height: inherit;
}

.content--about {
    width: 100%;
    margin: 0;
    padding-left: clamp(var(--gutter-x), 6vw, 80px);
    padding-right: var(--gutter-x);
}

.imprint__info {
    color: var(--color-ink);
    max-width: 560px;
    position: relative;
    z-index: 5;
    transform: translateY(-50px);
}

.imprint__subtitle {
    display: inline-block;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.imprint__title {
    font-family: var(--font-heading);
    font-size: var(--section-title-size);
    font-weight: var(--fw-bold);
    color: var(--color-ink);
    line-height: var(--lh-tight);
    text-wrap: balance;
}

.imprint__description {
    margin-top: var(--space-5);
    color: var(--color-ink-60);
    font-size: var(--section-lead-size);
    line-height: var(--lh-base);
    max-width: 44ch;
}

.imprint__lower {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: var(--space-8);
    padding: clamp(12px, 1.7vw, 18px) clamp(14px, 2.2vw, 24px);
    border-radius: var(--radius-xl);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 12px 28px rgba(var(--color-ink-rgb), 0.07);
    max-width: min(560px, 100%);
}

.imprint__stats,
.imprint__detail {
    grid-row: 1;
    grid-column: 1;
}

.imprint__stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-8);
    align-self: center;
    align-items: flex-start;
    min-height: 72px;
    transition: opacity 0.26s ease, transform 0.26s ease;
}

.imprint__lower.has-detail .imprint__stats {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-5px);
}

.stat-item {
    min-width: 84px;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 2.8vw, 2.65rem);
    font-weight: var(--fw-bold);
    line-height: 1;
    color: var(--color-accent);
}

.stat-label {
    display: block;
    margin-top: 0.45rem;
    color: var(--color-ink-45);
    font-size: var(--text-sm);
    line-height: var(--lh-snug);
}

.imprint__detail {
    align-self: center;
    padding: var(--space-3) var(--space-4) var(--space-3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-strong);
    background: rgba(255, 255, 255, 0.46);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
    opacity: 0;
    visibility: hidden;
    transform: translateY(7px);
    transition: opacity 0.26s ease, transform 0.26s ease, visibility 0s linear 0.26s;
    pointer-events: none;
}

.imprint__detail:not(.is-hidden) {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.26s ease, transform 0.26s ease, visibility 0s linear 0s;
    pointer-events: auto;
}

.imprint__detail.is-hidden {
    display: block;
}

.imprint__detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.imprint__detail-media {
    margin: 0 0 var(--space-2);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(var(--color-primary-rgb), 0.14);
    background: rgba(255, 255, 255, 0.42);
}

.imprint__detail-media.is-hidden {
    display: none;
}

.imprint__detail-image {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.imprint__detail-type {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--fw-bold);
    letter-spacing: var(--eyebrow-spacing);
    text-transform: uppercase;
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.08);
    border: 1px solid rgba(var(--color-primary-rgb), 0.18);
    border-radius: var(--radius-full);
    padding: 0.2em 0.7em;
    line-height: 1.6;
    max-width: 70%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.imprint__detail-close {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--color-ink-12);
    background: rgba(var(--color-ink-rgb), 0.04);
    color: var(--color-ink-45);
    cursor: pointer;
    padding: 0;
    transition: background 0.18s ease, color 0.18s ease;
}

.imprint__detail-close:hover {
    background: var(--color-ink-12);
    color: var(--color-ink);
}

.imprint__detail-title {
    font-family: var(--font-heading);
    font-size: clamp(0.98rem, 1.6vw, 1.25rem);
    font-weight: var(--fw-bold);
    line-height: var(--lh-snug);
    color: var(--color-ink);
    margin: 0;
}

.imprint__detail-text {
    margin: var(--space-2) 0 0;
    color: var(--color-ink-60);
    font-size: var(--text-sm);
    line-height: var(--lh-base);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.imprint__map-wrapper {
    position: absolute;
    top: 50%;
    right: clamp(-14px, 1vw, 18px);
    transform: translateY(-50%);
    width: var(--imprint-map-layer-size);
    max-width: none;
    aspect-ratio: 4188 / 2472;
    z-index: 4;
}

.imprint__map-base {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: invert(1) grayscale(1) contrast(1.08);
    mix-blend-mode: multiply;
    opacity: 0.85;
    clip-path: inset(0 1px);
    user-select: none;
    pointer-events: none;
}

.imprint__map-overlay {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.map-labels {
    pointer-events: none;
}

.map-hub-logos {
    pointer-events: auto;
}

.map-project-icons {
    pointer-events: auto;
}

.map-connections {
    pointer-events: none;
}

.dot-label {
    font-family: var(--font-heading);
    font-size: var(--imprint-label-font-size, 64px);
    font-weight: var(--fw-bold);
    paint-order: stroke;
    stroke: rgba(255, 255, 255, 0.92);
    stroke-width: calc(var(--imprint-label-font-size, 64px) * 0.22);
    letter-spacing: 0.8px;
    user-select: none;
    transform-origin: center;
    transform-box: fill-box;
    transition: transform 0.22s var(--scroll-ease-fast), fill 0.22s ease;
}

.dot-label--hub {
    fill: var(--color-primary);
}

.dot-label--project {
    fill: var(--color-accent);
}

.project-icon {
    pointer-events: auto;
    cursor: pointer;
    filter: drop-shadow(0 3px 8px rgba(0, 0, 0, 0.28));
    transform-origin: center;
    transform-box: fill-box;
    transition: transform 0.22s var(--scroll-ease-fast), filter 0.22s ease;
}

.hub-logo {
    pointer-events: auto;
    cursor: pointer;
    filter: drop-shadow(0 5px 12px rgba(0, 0, 0, 0.3));
    transform-origin: center;
    transform-box: fill-box;
    transition: transform 0.22s var(--scroll-ease-fast), filter 0.22s ease;
}

.hub-logo-ring {
    fill: rgba(255, 255, 255, 0.96);
    stroke: rgba(var(--color-primary-rgb), 0.22);
    stroke-width: 4;
    pointer-events: none;
    transform-origin: center;
    transform-box: fill-box;
    transition: transform 0.22s var(--scroll-ease-fast), stroke 0.22s ease;
}

.hub-logo-link {
    stroke: rgba(var(--color-primary-rgb), 0.48);
    stroke-width: 3;
    stroke-linecap: round;
    pointer-events: none;
}

.dot {
    cursor: pointer;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform-origin: center;
    transform-box: fill-box;
    pointer-events: auto;
}

.dot:hover {
    opacity: 0.9;
}

.dot.is-hovered,
.dot-label.is-hovered,
.project-icon.is-hovered,
.hub-logo.is-hovered,
.hub-logo-ring.is-hovered {
    transform: scale(var(--imprint-hover-scale));
}

.dot-label.is-hovered {
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.22));
}

.dot:focus-visible {
    outline: none;
    stroke: var(--color-white);
    stroke-width: 5;
}

.dot.is-selected {
    stroke: var(--color-white);
    stroke-width: 4;
    filter: drop-shadow(0 0 16px rgba(var(--color-accent-rgb), 0.48));
}

.dot--hub {
    fill: var(--color-primary);
}

.dot--project {
    fill: var(--color-accent);
    stroke: var(--color-white);
    stroke-width: 2.4;
}

.dot-pulse {
    fill: rgba(var(--color-primary-rgb), 0.34);
    transform-origin: center;
    transform-box: fill-box;
    animation: pulse 2.4s ease-out infinite;
    pointer-events: none;
}

.dot-pulse--delay {
    animation-delay: 0.65s;
}

.dot-pulse--delay-2 {
    animation-delay: 1.15s;
}

.connection-line {
    stroke: rgba(var(--color-accent-rgb), 0.75);
    stroke-width: 3.5;
    fill: none;
    stroke-linecap: round;
    /* Dùng dasharray để tạo nét đứt: nét dài 8px, khoảng trống 12px */
    stroke-dasharray: 8 12;
    /* Chạy vô tận để tạo cảm giác di chuyển vào dự án.
       Duration được ghi đè bằng PHP inline dựa trên độ dài */
    animation-name: flowLine;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

@keyframes flowLine {
    to {
        stroke-dashoffset: -400;
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }

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

.draw-line-anim {
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
    opacity: 0;
    animation-play-state: paused;
}

.panel--about.is-active .draw-line-anim {
    /* Delay và Duration do PHP tiêm trực tiếp, ở đây chỉ cài keyframe và kiểu chạy */
    animation-name: drawMask;
    animation-timing-function: ease-out;
    animation-fill-mode: forwards;
    animation-play-state: running;
}

@keyframes drawMask {
    0% {
        stroke-dashoffset: 100;
        opacity: 0;
    }

    1% {
        opacity: 1;
        /* Bật tức thì lên 1 để thấy mặt nạ */
    }

    100% {
        stroke-dashoffset: 0;
        opacity: 1;
    }
}

/* ------- MAP REVEAL ANIMATIONS ------- */

.map-anim-pop,
.map-anim-fade {
    opacity: 0;
    animation-play-state: paused;
    pointer-events: none;
}

.panel--about.is-active .map-anim-pop {
    animation-name: mapPopIn;
    animation-duration: 0.6s;
    animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1);
    animation-fill-mode: both;
    animation-play-state: running;
    pointer-events: auto;
}

.panel--about.is-active .map-anim-fade {
    animation-name: mapFadeIn;
    animation-duration: 0.6s;
    animation-timing-function: ease;
    animation-fill-mode: both;
    animation-play-state: running;
    pointer-events: auto;
}

@keyframes mapPopIn {
    0% {
        opacity: 0;
        transform: scale(0);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes mapFadeIn {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1080px) {
    .panel--about {
        --imprint-map-layer-size: calc(var(--imprint-map-zoom, 120%) * 0.9);
    }

    .imprint__info {
        max-width: 520px;
    }

    .imprint__map-wrapper {
        right: clamp(-20px, 0.8vw, 8px);
    }
}

@media (max-width: 840px) {
    .panel--about {
        --imprint-map-layer-size: calc(var(--imprint-map-zoom, 120%) * 1.1);
        --imprint-hover-scale: 1.2;
    }

    .imprint {
        min-height: clamp(540px, 70vh, 760px);
    }

    .content--about {
        padding-left: var(--gutter-x-mobile);
        padding-right: var(--gutter-x-mobile);
    }

    .imprint__info {
        max-width: none;
        transform: none;
    }

    .imprint__description {
        max-width: none;
    }

    .imprint__lower {
        margin-top: var(--space-7);
    }

    .imprint__stats {
        gap: var(--space-6);
    }

    .imprint__detail {
        padding: 0.9rem 1rem;
    }

    .imprint__map-wrapper {
        display: none;
    }

    .dot-label {
        font-size: calc(var(--imprint-label-font-size, 64px) * 0.82);
        stroke-width: calc(var(--imprint-label-font-size, 64px) * 0.18);
    }
}