.about-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-right: 9.6em; /* 115px / 16px */
    padding-left: 9.6em;
    gap: 9.6em; /* 115px / 16px */
    background-color: var(--light-background);
    padding-bottom: 0em;
    padding-top: 9.6em;
}

.about-image-column,
.about-text-column {
    width: 50%;
}

.about-image-container {
    width: 100%;
    position: relative;
    overflow: hidden;
    border-radius: 10px;
}

.about-section .about-image-container img {
    width: 100%;
    height: 550px;
    object-fit: cover;
    display: block;
    border-radius: 10px;
}

/* Masque les 3 px noirs intégrés au bord droit de cette image (609 px). */
.about-section .about-image-container img[src*="/accueil-espaces-impact.png"] {
    width: 100.7%;
    max-width: none;
    border-radius: 0; /* Les angles sont découpés par le conteneur existant. */
}

.about-text-column {
    display: flex;
    flex-direction: column;
    gap: 2em;
}

.about-intro {
    display: flex;
    gap: 1em;
    font-family: 'RMMono', monospace;
    font-size: 0.8rem;
    color: var(--grey-text);
    text-transform: uppercase;
}

.about-paragraph {
    font-family: 'RMNeue-Regular', sans-serif;
    font-size: 1.8rem;
    line-height: 1.4;
    color: var(--black);
}

.about-paragraph .highlight {
    color: var(--grey-text);
}

.about-link-container {
    display: flex;
    align-items: center;
    gap: 1em;
}

.about-link {
    font-family: 'RMMono', monospace;
    font-size: 0.8rem;
    color: var(--black);
    text-decoration: none;
    text-transform: uppercase;
    padding-bottom: 5px;
    position: relative;
}

.about-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--black);
    transform-origin: left;
}

.about-link-container:hover .about-link::after {
    animation: underline-anim 0.4s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

.about-button {
    background: transparent;
    border: 1px dotted var(--black);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    padding: 0;
}

.about-button .arrow-wrapper {
    display: flex;
    transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
    position: absolute;
    width: 200%;
    left: 0;
    transform: translateX(-50%); /* On affiche la 2ème flèche par défaut */
}

.about-link-container:hover .about-button .arrow-wrapper {
    transform: translateX(0); /* On glisse vers la droite pour montrer la 1ère */
}

.about-button .arrow-svg {
    width: 50%;
    box-sizing: border-box;
    padding: 0 16px;
}

.about-color-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--orange-primary);
    mix-blend-mode: multiply;
    opacity: 0.45;
    z-index: 2;
    pointer-events: none;
    border-radius: 10px;
}

.about-noise-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    opacity: 0.15;
    mix-blend-mode: overlay;
    pointer-events: none;
    overflow: hidden;
    border-radius: 10px;
}

.about-noise-overlay::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    animation: grain 8s steps(10) infinite;
    background-image:
        repeating-conic-gradient(var(--black) 0%, transparent 0.00002%, transparent 0.00004%, var(--black) 0.00007%),
        repeating-conic-gradient(var(--black) 0%, transparent 0.00001%, transparent 0.0002%, var(--black) 0.00008%);
    background-size: 100px 100px, 150px 150px;
}

@keyframes grain {
    0%, 100% { transform: translate(0, 0); }
    10% { transform: translate(-5%, -10%); }
    20% { transform: translate(-15%, 5%); }
    30% { transform: translate(7%, -25%); }
    40% { transform: translate(-5%, 25%); }
    50% { transform: translate(-15%, 10%); }
    60% { transform: translate(15%, 0%); }
    70% { transform: translate(0%, 15%); }
    80% { transform: translate(3%, 25%); }
    90% { transform: translate(-10%, 10%); }
}

.glass-box {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    padding: 1rem;
    clip-path: polygon(0 0.5em, 0.5em 0, calc(100% - 0.5em) 0, 100% 0.5em, 100% calc(100% - 0.5em), calc(100% - 0.5em) 100%, 0.5em 100%, 0 calc(100% - 0.5em));
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    background-color: #fff3;
    flex-flow: column;
    justify-content: space-between;
    align-items: flex-start;
    display: flex;
    z-index: 1;
    font-family: 'RMMono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--black);
    font-weight: 500;
    max-width: 35ch;
}

.glass-box span {
    display: block;
    line-height: 1.4;
}

.pulsing-dot {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 0.33rem;
    height: 0.33rem;
    background-color: var(--orange-primary);
    border-radius: 50%;
    z-index: 2; /* Pour être au-dessus du halo */
}

.pulsing-dot::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--orange-primary);
    border-radius: 50%;
    animation: pulse-halo 1.5s infinite ease-out;
    z-index: 4;
}

@keyframes pulse-halo {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

@keyframes underline-anim {
    0% {
        transform: scaleX(1);
        transform-origin: right;
    }
    49% {
        transform: scaleX(0);
        transform-origin: right;
    }
    50% {
        transform: scaleX(0);
        transform-origin: left;
    }
    100% {
        transform: scaleX(1);
        transform-origin: left;
    }
}

/* SVG Corners pour about-image-container */
.about-image-container .corner {
    position: absolute;
    width: 31px;
    height: 31px;
    color: var(--black);
    z-index: 15;
    opacity: 1;
}

.about-image-container .corner.first {
    top: 10px;
    left: 10px;
}

.about-image-container .corner.second {
    top: 10px;
    right: 10px;
}

.about-image-container .corner.third {
    bottom: 10px;
    left: 10px;
}

.about-image-container .corner.forth {
    bottom: 10px;
    right: 10px;
}

/* =============================================
   RESPONSIVE — MOBILE (≤768px)
   ============================================= */
@media (max-width: 768px) {
    .about-section {
        flex-direction: column;
        padding: 5em 1.25em 4em;
        gap: 2.5em;
    }

    .about-image-column,
    .about-text-column {
        width: 100%;
    }

    .about-text-column {
        gap: 1.5em;
    }

    .about-paragraph {
        font-size: 1.25rem;
        line-height: 1.4;
    }

    .about-section .about-image-container img {
        height: 360px;
    }

    .glass-box {
        font-size: 0.65rem;
        padding: 0.75rem;
        max-width: 22ch;
    }

    .about-image-container .corner {
        width: 22px;
        height: 22px;
    }
}