/* =========================================================
   ISC LUBUMBASHI — MEGA MENU V2
   Fichier : mega-menu.css
   ========================================================= */


/* ---------------------------------------------------------
   1. VARIABLES
   --------------------------------------------------------- */

:root {
    --isc-mega-blue: #0a2f67;
    --isc-mega-blue-dark: #071f46;
    --isc-mega-blue-deep: #04152f;
    --isc-mega-blue-soft: #edf4fc;

    --isc-mega-red: #c62828;
    --isc-mega-red-soft: #ef4444;

    --isc-mega-white: #ffffff;
    --isc-mega-surface: #f8fafc;

    --isc-mega-text: #182235;
    --isc-mega-text-soft: #667085;

    --isc-mega-border: rgba(10, 47, 103, 0.11);
    --isc-mega-border-light: rgba(255, 255, 255, 0.1);

    --isc-mega-shadow:
        0 30px 80px rgba(4, 21, 47, 0.2);

    --isc-mega-radius-sm: 13px;
    --isc-mega-radius-md: 20px;
    --isc-mega-radius-lg: 28px;

    --isc-mega-transition: 220ms ease;
}


/* ---------------------------------------------------------
   2. POSITIONNEMENT PRINCIPAL
   --------------------------------------------------------- */

.isc-header-nav__item--mega {
    position: static;
}

.isc-mega-menu {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    z-index: 120;
    width: 100%;
    padding: 22px 0 0;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(14px);
    transition:
        opacity var(--isc-mega-transition),
        visibility var(--isc-mega-transition),
        transform var(--isc-mega-transition);
}

.isc-header-nav__item--mega:hover > .isc-mega-menu,
.isc-header-nav__item--mega:focus-within > .isc-mega-menu,
.isc-header-nav__item--mega.is-open > .isc-mega-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.isc-mega-menu::before {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 22px;
    content: "";
}


/* ---------------------------------------------------------
   3. CONTENEUR GÉNÉRAL
   --------------------------------------------------------- */

.isc-mega-menu__inner {
    display: grid;
    grid-template-columns:
        minmax(230px, 0.78fr)
        minmax(0, 1.65fr)
        minmax(245px, 0.72fr);
    gap: 0;
    max-width: 1280px;
    margin-inline: auto;
    overflow: hidden;
    border: 1px solid var(--isc-mega-border);
    border-radius: var(--isc-mega-radius-lg) var(--isc-mega-radius-lg) 0 0;
    background: var(--isc-mega-white);
    box-shadow: var(--isc-mega-shadow);
}


/* ---------------------------------------------------------
   4. COLONNE INTRODUCTION
   --------------------------------------------------------- */

.isc-mega-menu__intro {
    position: relative;
    min-width: 0;
    padding: 34px 30px;
    overflow: hidden;
    color: var(--isc-mega-white);
    background:
        linear-gradient(
            145deg,
            var(--isc-mega-blue-dark) 0%,
            var(--isc-mega-blue) 100%
        );
}

.isc-mega-menu__intro::before {
    position: absolute;
    top: -80px;
    right: -70px;
    width: 230px;
    height: 230px;
    content: "";
    border-radius: 50%;
    background:
        radial-gradient(
            circle,
            rgba(255, 255, 255, 0.13),
            transparent 70%
        );
}

.isc-mega-menu__intro::after {
    position: absolute;
    right: -20px;
    bottom: -55px;
    width: 170px;
    height: 170px;
    content: "";
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 50%;
}

.isc-mega-menu__eyebrow {
    position: relative;
    z-index: 2;
    display: inline-flex;
    margin-bottom: 15px;
    color: #ffb2b2;
    font-size: 0.68rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.isc-mega-menu__intro h2 {
    position: relative;
    z-index: 2;
    margin: 0 0 14px;
    color: var(--isc-mega-white);
    font-family: "Playfair Display", serif;
    font-size: 2rem;
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.isc-mega-menu__intro > p {
    position: relative;
    z-index: 2;
    margin: 0 0 26px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.83rem;
    line-height: 1.72;
}

.isc-mega-menu__intro-actions {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.isc-mega-menu__all-link,
.isc-mega-menu__admission-link {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 0 15px;
    border-radius: 12px;
    font-size: 0.76rem;
    font-weight: 800;
    transition:
        background var(--isc-mega-transition),
        border-color var(--isc-mega-transition),
        transform var(--isc-mega-transition);
}

.isc-mega-menu__all-link {
    color: var(--isc-mega-white);
    background:
        linear-gradient(
            135deg,
            var(--isc-mega-red-soft),
            var(--isc-mega-red)
        );
    box-shadow:
        0 12px 26px rgba(198, 40, 40, 0.26);
}

.isc-mega-menu__all-link:hover {
    transform: translateY(-2px);
}

.isc-mega-menu__admission-link {
    justify-content: flex-start;
    color: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
}

.isc-mega-menu__admission-link:hover {
    border-color: rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.isc-mega-menu__intro-decoration {
    position: absolute;
    right: 22px;
    bottom: 18px;
    z-index: 1;
    display: flex;
    gap: 6px;
}

.isc-mega-menu__intro-decoration span {
    display: block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
}

.isc-mega-menu__intro-decoration span:nth-child(2) {
    background: rgba(255, 255, 255, 0.32);
}

.isc-mega-menu__intro-decoration span:nth-child(3) {
    background: var(--isc-mega-red-soft);
}


/* ---------------------------------------------------------
   5. COLONNE DES PROGRAMMES
   --------------------------------------------------------- */

.isc-mega-menu__programs {
    min-width: 0;
    padding: 30px;
    background: var(--isc-mega-white);
}

.isc-mega-menu__section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 22px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--isc-mega-border);
}

.isc-mega-menu__section-header > div {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.isc-mega-menu__section-header span {
    color: var(--isc-mega-red);
    font-size: 0.67rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.isc-mega-menu__section-header strong {
    color: var(--isc-mega-blue-dark);
    font-size: 1rem;
    font-weight: 800;
}

.isc-mega-menu__section-header > a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--isc-mega-blue);
    font-size: 0.73rem;
    font-weight: 800;
    white-space: nowrap;
    transition:
        color var(--isc-mega-transition),
        transform var(--isc-mega-transition);
}

.isc-mega-menu__section-header > a:hover {
    color: var(--isc-mega-red);
    transform: translateX(3px);
}


/* ---------------------------------------------------------
   6. GRILLE DES PROGRAMMES
   --------------------------------------------------------- */

.isc-mega-menu__program-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.isc-mega-menu__program-card {
    position: relative;
    display: flex;
    min-width: 0;
    align-items: flex-start;
    gap: 13px;
    padding: 14px;
    overflow: hidden;
    border: 1px solid var(--isc-mega-border);
    border-radius: 15px;
    background: var(--isc-mega-white);
    transition:
        border-color var(--isc-mega-transition),
        background var(--isc-mega-transition),
        box-shadow var(--isc-mega-transition),
        transform var(--isc-mega-transition);
}

.isc-mega-menu__program-card::after {
    position: absolute;
    right: -20px;
    bottom: -24px;
    width: 70px;
    height: 70px;
    content: "";
    border-radius: 50%;
    background: rgba(10, 47, 103, 0.035);
    transition: transform var(--isc-mega-transition);
}

.isc-mega-menu__program-card:hover {
    border-color: rgba(10, 47, 103, 0.2);
    background: var(--isc-mega-surface);
    box-shadow:
        0 14px 28px rgba(4, 21, 47, 0.08);
    transform: translateY(-3px);
}

.isc-mega-menu__program-card:hover::after {
    transform: scale(1.3);
}

.isc-mega-menu__program-card.is-featured {
    border-color: rgba(198, 40, 40, 0.18);
    background:
        linear-gradient(
            145deg,
            rgba(198, 40, 40, 0.035),
            rgba(10, 47, 103, 0.025)
        );
}

.isc-mega-menu__program-icon {
    position: relative;
    z-index: 2;
    display: grid;
    flex: 0 0 44px;
    place-items: center;
    width: 44px;
    height: 44px;
    color: var(--isc-mega-blue);
    border-radius: 13px;
    background: var(--isc-mega-blue-soft);
    transition:
        color var(--isc-mega-transition),
        background var(--isc-mega-transition),
        transform var(--isc-mega-transition);
}

.isc-mega-menu__program-card:hover .isc-mega-menu__program-icon {
    color: var(--isc-mega-white);
    background: var(--isc-mega-blue);
    transform: rotate(-4deg);
}

.isc-mega-menu__program-icon i {
    font-size: 1.15rem;
}

.isc-mega-menu__program-content {
    position: relative;
    z-index: 2;
    display: flex;
    min-width: 0;
    flex: 1 1 auto;
    flex-direction: column;
    gap: 6px;
}

.isc-mega-menu__program-heading {
    display: flex;
    min-width: 0;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
}

.isc-mega-menu__program-heading strong {
    color: var(--isc-mega-blue-dark);
    font-size: 0.78rem;
    font-weight: 800;
    line-height: 1.35;
}

.isc-mega-menu__program-heading > i {
    flex: 0 0 auto;
    margin-top: 2px;
    color: var(--isc-mega-text-soft);
    font-size: 0.85rem;
    transition:
        color var(--isc-mega-transition),
        transform var(--isc-mega-transition);
}

.isc-mega-menu__program-card:hover
.isc-mega-menu__program-heading > i {
    color: var(--isc-mega-red);
    transform: translate(2px, -2px);
}

.isc-mega-menu__program-description {
    display: -webkit-box;
    overflow: hidden;
    color: var(--isc-mega-text-soft);
    font-size: 0.69rem;
    line-height: 1.55;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.isc-mega-menu__program-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    margin-top: 2px;
}

.isc-mega-menu__program-meta > span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--isc-mega-text-soft);
    font-size: 0.61rem;
    font-weight: 700;
}

.isc-mega-menu__program-meta i {
    color: var(--isc-mega-blue);
    font-size: 0.72rem;
}


/* ---------------------------------------------------------
   7. ÉTAT VIDE
   --------------------------------------------------------- */

.isc-mega-menu__empty {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    border: 1px dashed rgba(10, 47, 103, 0.18);
    border-radius: 16px;
    background: var(--isc-mega-surface);
}

.isc-mega-menu__empty-icon {
    display: grid;
    flex: 0 0 50px;
    place-items: center;
    width: 50px;
    height: 50px;
    color: var(--isc-mega-blue);
    border-radius: 15px;
    background: var(--isc-mega-blue-soft);
}

.isc-mega-menu__empty-icon i {
    font-size: 1.35rem;
}

.isc-mega-menu__empty strong {
    display: block;
    margin-bottom: 6px;
    color: var(--isc-mega-blue-dark);
    font-size: 0.85rem;
}

.isc-mega-menu__empty p {
    margin: 0;
    color: var(--isc-mega-text-soft);
    font-size: 0.72rem;
    line-height: 1.6;
}


/* ---------------------------------------------------------
   8. COLONNE FILIÈRE MISE EN AVANT
   --------------------------------------------------------- */

.isc-mega-menu__featured {
    position: relative;
    display: flex;
    min-width: 0;
    flex-direction: column;
    justify-content: space-between;
    padding: 30px;
    overflow: hidden;
    color: var(--isc-mega-white);
    background:
        linear-gradient(
            160deg,
            var(--isc-mega-blue) 0%,
            var(--isc-mega-blue-deep) 100%
        );
}

.isc-mega-menu__featured::before {
    position: absolute;
    top: -65px;
    left: -65px;
    width: 170px;
    height: 170px;
    content: "";
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}

.isc-mega-menu__featured-top {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.isc-mega-menu__featured-badge {
    display: inline-flex;
    padding: 7px 10px;
    color: #ffd4d4;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    font-size: 0.61rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.isc-mega-menu__featured-icon {
    display: grid;
    flex: 0 0 46px;
    place-items: center;
    width: 46px;
    height: 46px;
    color: var(--isc-mega-white);
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.08);
}

.isc-mega-menu__featured-icon i {
    font-size: 1.2rem;
}

.isc-mega-menu__featured-content {
    position: relative;
    z-index: 2;
    margin-top: 30px;
}

.isc-mega-menu__featured-content h3 {
    margin: 0 0 12px;
    color: var(--isc-mega-white);
    font-family: "Playfair Display", serif;
    font-size: 1.45rem;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.isc-mega-menu__featured-content p {
    margin: 0 0 22px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.76rem;
    line-height: 1.65;
}

.isc-mega-menu__featured-content a {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--isc-mega-white);
    font-size: 0.74rem;
    font-weight: 800;
    transition:
        color var(--isc-mega-transition),
        transform var(--isc-mega-transition);
}

.isc-mega-menu__featured-content a:hover {
    color: #ffb0b0;
    transform: translateX(4px);
}

.isc-mega-menu__featured-decoration span {
    position: absolute;
    border-radius: 50%;
}

.isc-mega-menu__featured-decoration span:first-child {
    right: -55px;
    bottom: -55px;
    width: 150px;
    height: 150px;
    background:
        radial-gradient(
            circle,
            rgba(198, 40, 40, 0.22),
            transparent 72%
        );
}

.isc-mega-menu__featured-decoration span:last-child {
    right: 28px;
    bottom: 24px;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.18);
}


/* ---------------------------------------------------------
   9. PIED DU MEGA MENU
   --------------------------------------------------------- */

.isc-mega-menu__footer {
    display: flex;
    max-width: 1280px;
    min-height: 54px;
    margin-inline: auto;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 12px 20px;
    color: var(--isc-mega-text-soft);
    border: 1px solid var(--isc-mega-border);
    border-top: 0;
    border-radius: 0 0 var(--isc-mega-radius-md) var(--isc-mega-radius-md);
    background: var(--isc-mega-surface);
    box-shadow:
        0 20px 50px rgba(4, 21, 47, 0.12);
}

.isc-mega-menu__footer-message {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 10px;
    font-size: 0.7rem;
    line-height: 1.5;
}

.isc-mega-menu__footer-message i {
    flex: 0 0 auto;
    color: var(--isc-mega-blue);
    font-size: 1rem;
}

.isc-mega-menu__footer > a {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 8px;
    color: var(--isc-mega-blue);
    font-size: 0.7rem;
    font-weight: 800;
    white-space: nowrap;
    transition:
        color var(--isc-mega-transition),
        transform var(--isc-mega-transition);
}

.isc-mega-menu__footer > a:hover {
    color: var(--isc-mega-red);
    transform: translateX(3px);
}


/* ---------------------------------------------------------
   10. ÉTATS FOCUS
   --------------------------------------------------------- */

.isc-mega-menu a:focus-visible {
    outline: 3px solid rgba(198, 40, 40, 0.25);
    outline-offset: 3px;
}


/* ---------------------------------------------------------
   11. RESPONSIVE — LARGE DESKTOP
   --------------------------------------------------------- */

@media (max-width: 1320px) {
    .isc-mega-menu__inner,
    .isc-mega-menu__footer {
        width: calc(100% - 36px);
    }

    .isc-mega-menu__inner {
        grid-template-columns:
            minmax(220px, 0.75fr)
            minmax(0, 1.55fr)
            minmax(230px, 0.7fr);
    }

    .isc-mega-menu__programs {
        padding: 26px;
    }

    .isc-mega-menu__intro,
    .isc-mega-menu__featured {
        padding: 28px;
    }
}


/* ---------------------------------------------------------
   12. RESPONSIVE — DESKTOP INTERMÉDIAIRE
   --------------------------------------------------------- */

@media (max-width: 1160px) {
    .isc-mega-menu__inner {
        grid-template-columns:
            minmax(215px, 0.72fr)
            minmax(0, 1.45fr);
    }

    .isc-mega-menu__featured {
        display: none;
    }

    .isc-mega-menu__program-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}


/* ---------------------------------------------------------
   13. MASQUAGE SUR TABLETTE ET MOBILE
   --------------------------------------------------------- */

@media (max-width: 980px) {
    .isc-mega-menu {
        display: none;
    }
}


/* ---------------------------------------------------------
   14. MOUVEMENT RÉDUIT
   --------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    .isc-mega-menu,
    .isc-mega-menu *,
    .isc-mega-menu *::before,
    .isc-mega-menu *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}