/* ==========================================================
   FULLSCREEN MENU
   ========================================================== */

#mainMenu {
    position: fixed;
    inset: 0;
    background: #fff;
    z-index: 9999;

    opacity: 0;
    visibility: hidden;

    transform: translateY(-25px);

    transition:
        opacity .35s ease,
        transform .35s ease,
        visibility .35s ease;

    overflow: auto;
}

#mainMenu.open {

    opacity: 1;
    visibility: visible;

    transform: translateY(0);
}


/* ==============================
   CONTENIDOR
   ============================== */

.menu-wrapper {

    width: min(94%, 1800px);

    margin: 55px auto 70px;

    display: grid;

    grid-template-columns:
        300px 1fr 1fr 1fr 1fr;

    gap: 45px;

    align-items: start;
}



/* ==============================
   COLUMNA ESQUERRA
   ============================== */

.menu-left {

    display: flex;

    flex-direction: column;

    /* min-height: 780px; */
    min-height: 0px;

    opacity: 0;

    transform: translateY(35px);

    transition: .45s ease;
}

#mainMenu.open .menu-left {

    opacity: 1;

    transform: none;
}



.menu-logo {

    width: 280px;

    display: block;

    margin: 0 0 80px;
}



.menu-main-links {

    margin: 0;

    padding: 0;

    list-style: none;
}

.menu-main-links li {

    margin: 0 0 20px;
}

.menu-main-links a {

    display: block;

    color: #202020;

    text-decoration: none;

    font-family: 'Nunito Sans', sans-serif;

    font-size: 24px;

    font-weight: 700;

    line-height: 1.15;

    transition: opacity .25s;
}

.menu-main-links a:hover {

    opacity: .55;
}



/* ==============================
   BOTÓ REGISTRATION
   ============================== */

.register-btn {

    /* margin-top: auto; */

    width: 220px;

    padding: 17px 0;

    display: block;

    text-align: center;

    background: #231f20;

    color: #fff !important;

    text-decoration: none;

    text-transform: uppercase;

    letter-spacing: 2px;

    font-size: 14px;

    font-weight: 600;

    overflow: hidden;

    position: relative;

    transition: .35s;
}

.register-btn span {

    position: relative;

    z-index: 2;
}

.register-btn::before {

    content: "";

    position: absolute;

    inset: 0;

    background: #fff;

    transform: translateX(-100%);

    transition: .35s;
}

.register-btn:hover::before {

    transform: none;
}

.register-btn:hover {

    color: #111 !important;
}



/* ==============================
   COLUMNES
   ============================== */

.menu-column {

    position: relative;

    padding-left: 55px;

    padding-top: 105px;

    opacity: 0;

    transform: translateY(35px);

    transition: .45s ease;
}

#mainMenu.open .menu-column {

    opacity: 1;

    transform: none;
}

.menu-column:nth-child(2) {
    transition-delay: .15s;
}

.menu-column:nth-child(3) {
    transition-delay: .25s;
}

.menu-column:nth-child(4) {
    transition-delay: .35s;
}

.menu-column:nth-child(5) {
    transition-delay: .45s;
}

.menu-column::before {

    content: "";

    position: absolute;

    left: 0;

    top: 5px;

    width: 1px;

    height: 430px;

    background: #e6e6e6;
}

/* ==========================================================
   FULLSCREEN MENU
   ========================================================== */

#mainMenu {
    position: fixed;
    inset: 0;
    background: #fff;
    z-index: 9999;

    opacity: 0;
    visibility: hidden;

    transform: translateY(-25px);

    transition:
        opacity .35s ease,
        transform .35s ease,
        visibility .35s ease;

    overflow: auto;
}

#mainMenu.open {

    opacity: 1;
    visibility: visible;

    transform: translateY(0);
}


/* ==============================
   CONTENIDOR
   ============================== */

/*=========================================================
  GRID
=========================================================*/

.menu-wrapper {

    width: min(94%, 1536px);

    margin: 55px auto 70px;

    display: grid;

    grid-template-columns: repeat(12, minmax(0, 1fr));

    column-gap: 40px;

    align-items: start;
}


/*=========================================================
  COLUMNA ESQUERRA
=========================================================*/

.menu-left {

    grid-column: 1 / span 3;

    display: flex;

    flex-direction: column;

    min-height: 760px;

    padding-right: 20px;
}


/*=========================================================
  CONGRESS
=========================================================*/

.menu-column:nth-of-type(1) {

    grid-column: 4 / span 2;
}


/*=========================================================
  SCIENTIFIC PROGRAM
=========================================================*/

.menu-column:nth-of-type(2) {

    grid-column: 6 / span 3;
}


/*=========================================================
  ABSTRACTS
=========================================================*/

.menu-column:nth-of-type(3) {

    grid-column: 9 / span 2;
}


/*=========================================================
  SPONSORS
=========================================================*/

.menu-column:nth-of-type(4) {

    grid-column: 11 / span 2;
}



.menu-logo {

    width: 240px;

    display: block;

    margin: 0 0 50px;
}



.menu-main-links {

    margin: 0;

    padding: 0;

    list-style: none;
}

.menu-main-links li {

    margin: 0 0 18px;
}

.menu-main-links a {

    display: block;

    color: #202020;

    text-decoration: none;

    font-family: 'Nunito Sans', sans-serif;

    font-size: 20px;

    font-weight: 700;

    line-height: 1.1;

    transition: opacity .25s;
}

.menu-main-links a:hover {

    opacity: .55;
}



/* ==============================
   BOTÓ REGISTRATION
   ============================== */

.register-btn {

    /* margin-top: auto; */

    width: 220px;

    padding: 17px 0;

    display: block;

    text-align: center;

    background: #231f20;

    color: #fff;

    text-decoration: none;

    text-transform: uppercase;

    letter-spacing: 2px;

    font-size: 14px;

    font-weight: 600;

    overflow: hidden;

    position: relative;

    transition: .35s;
}

.register-btn span {

    position: relative;

    z-index: 2;
}

.register-btn::before {

    content: "";

    position: absolute;

    inset: 0;

    /* background: #fff; */
    color: #000;

    transform: translateX(-100%);

    transition: .35s;
}

.register-btn:hover::before {

    transform: none;
}

.register-btn::before

.register-btn:hover {

    color: #111 !important;
}

.register-btn a:hover {

    color: #111 !important;
}

/* ==============================
   COLUMNES
   ============================== */

.menu-column {

    position: relative;

    padding-left: 20px;

    padding-top: 80px;

    opacity: 0;

    transform: translateY(35px);

    transition: .45s ease;

    min-width: 0;

}

#mainMenu.open .menu-column {

    opacity: 1;

    transform: none;
}

.menu-column:nth-child(2) {

    transition-delay: .15s;
}

.menu-column:nth-child(3) {

    transition-delay: .25s;
}

.menu-column:nth-child(4) {

    transition-delay: .35s;
}
.menu-column:nth-child(5) {

    transition-delay: .35s;
}

.menu-column::before {

    content: "";

    position: absolute;

    left: 0;

    top: 8px;

    bottom: 8px;

    width: 1px;

    height: auto;

    background: #ececec;
}

/* ==========================================================
   TÍTOLS DE LES COLUMNES
   ========================================================== */

.menu-column h2 {

    margin: 0 0 28px;

    padding-bottom: 16px;

    border-bottom: 3px solid #222;

    color: #222;

    font-family: 'Nunito Sans', sans-serif;

    font-size: 16px;

    font-weight: 700;

    line-height: 1.2;

    letter-spacing: 3px;

    text-transform: uppercase;

    text-align: left;
}



/* ==========================================================
   LLISTES
   ========================================================== */

.menu-column ul {

    margin: 0;

    padding: 0;

    list-style: none;
}

.menu-column li {

    margin: 0 0 16px;
}



/* ==========================================================
   ENLLAÇOS
   ========================================================== */

.menu-column a {

    display: block;

    width: 100%;

    color: #222;

    text-decoration: none;

    font-family: 'Nunito Sans', sans-serif;

    font-size: 16px;

    font-weight: 300;

    line-height: 1.55;

    transition:
        color .25s,
        padding-left .25s;
}



.menu-column a:hover {

    color: #000;

    padding-left: 10px;
}



/* Línia inferior */

.menu-column a::after {

    content: "";

    display: block;

    width: 0;

    height: 1px;

    margin-top: 3px;

    background: #222;

    transition: width .30s;
}

.menu-column a:hover::after {

    width: 100%;
}



/* ==========================================================
   BOTÓ DE TANCAR
   ========================================================== */

.menu-close {

    position: absolute;

    top: 38px;

    right: 42px;

    width: 44px;

    height: 44px;

    border: 0;

    background: none;

    cursor: pointer;

    padding: 0;
}

.menu-close span {

    position: absolute;

    left: 0;

    top: 21px;

    width: 44px;

    height: 1px;

    background: #111;
}

.menu-close span:first-child {

    transform: rotate(45deg);
}

.menu-close span:last-child {

    transform: rotate(-45deg);
}

.menu-close:hover {

    opacity: .6;
}



/* ==========================================================
   SCROLL
   ========================================================== */

#mainMenu::-webkit-scrollbar {

    width: 10px;
}

#mainMenu::-webkit-scrollbar-track {

    background: #f3f3f3;
}

#mainMenu::-webkit-scrollbar-thumb {

    background: #bdbdbd;
}

#mainMenu::-webkit-scrollbar-thumb:hover {

    background: #999;
}

/* ==========================================================
   ANIMACIÓ D'ENTRADA
   ========================================================== */

.menu-left,
.menu-column {

    will-change: transform, opacity;
}

.menu-main-links li {

    opacity: 0;

    transform: translateY(15px);

    transition:
        opacity .45s ease,
        transform .45s ease;
}

#mainMenu.open .menu-main-links li {

    opacity: 1;

    transform: none;
}

#mainMenu.open .menu-main-links li:nth-child(1) {

    transition-delay: .20s;
}

#mainMenu.open .menu-main-links li:nth-child(2) {

    transition-delay: .28s;
}

#mainMenu.open .menu-main-links li:nth-child(3) {

    transition-delay: .36s;
}



/* ==========================================================
   LOGO
   ========================================================== */

.menu-logo {

    opacity: 0;

    transform: translateY(-20px);

    transition:
        opacity .45s ease,
        transform .45s ease;
}

#mainMenu.open .menu-logo {

    opacity: 1;

    transform: none;
}



/* ==========================================================
   REGISTRATION
   ========================================================== */

.register-btn {

    box-sizing: border-box;

    border: 2px solid #231f20;
}

.register-btn:hover {

    background: #231f20;
}

.register-btn:hover span {

    color: #231f20;
}



/* ==========================================================
   COLUMNES
   ========================================================== */

.menu-column:nth-child(2) {

    padding-top: 110px;
}

.menu-column:nth-child(3) {

    padding-top: 110px;
}

.menu-column:nth-child(4) {

    padding-top: 110px;
}
.menu-column:nth-child(5) {

    padding-top: 110px;
}



/* ==========================================================
   EFECTE HOVER
   ========================================================== */

.menu-column li {

    transition: transform .25s ease;
}

.menu-column li:hover {

    transform: translateX(5px);
}



/* ==========================================================
   SEPARADORS
   ========================================================== */

.menu-column::before {

    opacity: .75;
}



/* ==========================================================
   SELECCIÓ
   ========================================================== */

#mainMenu ::selection {

    background: #231f20;

    color: #fff;
}



/* ==========================================================
   FOCUS ACCESSIBILITAT
   ========================================================== */

#mainMenu a:focus {

    outline: 2px solid #231f20;

    outline-offset: 6px;
}



/* ==========================================================
   PETITS AJUSTOS
   ========================================================== */

.menu-main-links {

    margin-bottom: 60px;
}

.menu-column:last-child {

    padding-right: 40px;
}

/* ==========================================================
   TABLET
   ========================================================== */

@media (max-width:1400px) {

    .menu-wrapper {

        width: 94%;

        grid-template-columns: repeat(12, 1fr);

        gap: 35px 30px;
    }

    .menu-left {

        grid-column: 1 / span 4;

        grid-row: 1 / span 2;

        min-height: auto;
    }

    .menu-column:nth-of-type(1) {

        grid-column: 5 / span 4;

        grid-row: 1;
    }

    .menu-column:nth-of-type(2) {

        grid-column: 9 / span 4;

        grid-row: 1;
    }

    .menu-column:nth-of-type(3) {

        grid-column: 5 / span 4;

        grid-row: 2;
    }

    .menu-column:nth-of-type(4) {

        grid-column: 9 / span 4;

        grid-row: 2;
    }

    .menu-logo {

        width: 240px;
    }

    .menu-main-links a {

        font-size: 28px;
    }

    .menu-column {

        padding-left: 35px;
    }

    .menu-column h2 {

        font-size: 14px;

        letter-spacing: 2px;

    }

    .menu-column a {

        font-size: 17px;
    }

}



/* ==========================================================
   MÒBIL
   ========================================================== */

@media (max-width:1024px) {

    #mainMenu {

        overflow-y: auto;
    }

    .menu-wrapper {

        width: 90%;

        margin: 80px auto;

        grid-template-columns: 1fr 1fr;

        gap: 40px 30px;
    }

    .menu-left {

        grid-column: 1 / -1;

        grid-row: 1;

        min-height: auto;
    }

    .menu-column:nth-of-type(1) {

        grid-column: 1;

        grid-row: 2;
    }

    .menu-column:nth-of-type(2) {

        grid-column: 2;

        grid-row: 2;
    }

    .menu-column:nth-of-type(3) {

        grid-column: 1;

        grid-row: 3;
    }

    .menu-column:nth-of-type(4) {

        grid-column: 2;

        grid-row: 3;
    }

    .menu-logo {

        width: 220px;

        margin-bottom: 50px;
    }

    .menu-main-links {

        margin-bottom: 40px;
    }

    .menu-main-links a {

        font-size: 28px;
    }

    .register-btn {

        margin-top: 30px;
    }

    .menu-column {

        padding: 0;

        opacity: 1;

        transform: none;
    }

    .menu-column::before {

        display: none;
    }

    .menu-column h2 {

        margin-bottom: 25px;
    }

    .menu-column li {

        margin-bottom: 14px;
    }

}



/* ==========================================================
   MÒBILS
   ========================================================== */

@media (max-width:700px) {

    .menu-wrapper {

        grid-template-columns: 1fr;

        gap: 35px;
    }

    .menu-left,
    .menu-column:nth-of-type(1),
    .menu-column:nth-of-type(2),
    .menu-column:nth-of-type(3),
    .menu-column:nth-of-type(4) {

        grid-column: 1;

        grid-row: auto;
    }

    .menu-logo {

        width: 180px;
    }

    .menu-main-links a {

        font-size: 22px;
    }

    .menu-column {

        padding: 0;
    }

    .register-btn {

        width: 100%;
    }

}



/* ==========================================================
   MÒBILS PETITS
   ========================================================== */

@media (max-width:640px) {

    .menu-wrapper {

        width: 88%;

        margin: 70px auto;
    }

    .menu-logo {

        width: 180px;
    }

    .menu-main-links a {

        font-size: 22px;
    }

    .menu-column h2 {

        font-size: 14px;
    }

    .menu-column a {

        font-size: 16px;

        line-height: 1.45;
    }

    .register-btn {

        width: 100%;
    }

    .menu-close {

        right: 20px;

        top: 20px;

        transform: scale(.85);
    }

}



/* ==========================================================
   REDUCCIÓ DE MOVIMENT
   ========================================================== */

@media (prefers-reduced-motion:reduce) {

    * {

        animation: none !important;

        transition: none !important;
    }

}