/* ============================================
   LUCÍA PIRIS PORTFOLIO — HEADER
   Top navigation and the side menu (the menu is built by js/main.js
   from the list in js/datos.js).
   ============================================ */

/* ---- Navigation ---- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* Same side margin as the columns' content, so logo and menu line up with them */
    padding: 0 28px;
    z-index: 1000;
    background: rgba(242, 239, 233, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    /* Same line as the columns' dividers */
    border-bottom: 1px solid var(--color-border);
    transition: transform 0.5s var(--ease-out-expo);
}

.nav__logo-img {
    height: 22px;
    width: auto;
    filter: brightness(0);
    transition: opacity 0.3s ease;
}

.nav__logo-img:hover {
    opacity: 0.7;
}

.nav__menu {
    display: flex;
    gap: 40px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav__link {
    font-family: var(--font-primary);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-light);
    position: relative;
    padding: 4px 0;
    transition: color 0.3s ease;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text);
    transition: width 0.4s var(--ease-out-expo);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-text);
}

.nav__link:hover::after {
    width: 100%;
}

/* Current page: the violet dot the side menu also uses */
.nav__link--active::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -12px;
    width: 5px;
    height: 5px;
    margin-top: -2.5px;
    border-radius: 50%;
    background: var(--color-accent-violet);
}

.nav__right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav__lang {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav__lang-active {
    color: var(--color-text);
}

.nav__lang-separator {
    color: var(--color-text-light);
}

.nav__lang-inactive {
    color: var(--color-text-light);
    transition: color 0.3s ease;
}

.nav__lang-inactive:hover {
    color: var(--color-text);
}

/* Menu button: "Menú" / "Cerrar" label next to the two lines */
.nav__menu-button {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
}

.nav__menu-label {
    min-width: 3.9em;
    text-align: right;
}

.nav__hamburger {
    width: 28px;
    height: 20px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.nav__hamburger span {
    display: block;
    width: 100%;
    height: 1.5px;
    background: var(--color-text);
    transition: transform 0.4s var(--ease-out-expo), opacity 0.3s ease;
}

.nav__menu-button:hover .nav__hamburger span:first-child {
    transform: translateY(-1px);
}

.nav__menu-button:hover .nav__hamburger span:last-child {
    transform: translateY(1px);
}

/* The two lines turn into an X while the side menu is open */
.nav__menu-button[aria-expanded="true"] .nav__hamburger span:first-child {
    transform: translateY(9.25px) rotate(45deg);
}

.nav__menu-button[aria-expanded="true"] .nav__hamburger span:last-child {
    transform: translateY(-9.25px) rotate(-45deg);
}

/* ---- Side Menu ---- */
/* Built by js/main.js; sits under the nav so the hamburger stays on top. */
.side-menu {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 999;
    width: min(460px, 100%);
    height: 100%;
    padding: calc(var(--nav-height) + 48px) 28px 40px;
    overflow-y: auto;
    background: var(--color-bg);
    border-left: 1px solid var(--color-border);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.7s var(--ease-out-expo), visibility 0s linear 0.7s;
}

.side-menu.is-open {
    transform: translateX(0);
    visibility: visible;
    transition: transform 0.7s var(--ease-out-expo), visibility 0s;
}

.side-menu__backdrop {
    position: fixed;
    inset: 0;
    z-index: 998;
    background: rgba(26, 26, 26, 0.18);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0s linear 0.5s;
}

.is-menu-open .side-menu__backdrop {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0s;
}

.is-menu-open body {
    overflow: hidden;
}

.side-menu__heading {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-light);
}

.side-menu__heading::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.side-menu__sections {
    list-style: none;
    border-bottom: 1px solid var(--color-border);
}

.side-menu__section {
    border-top: 1px solid var(--color-border);
    opacity: 0;
    transform: translateX(24px);
    transition: opacity 0.5s ease, transform 0.7s var(--ease-out-expo);
}

.side-menu.is-open .side-menu__section {
    opacity: 1;
    transform: translateX(0);
}

.side-menu.is-open .side-menu__section:nth-child(1) { transition-delay: 0.1s; }
.side-menu.is-open .side-menu__section:nth-child(2) { transition-delay: 0.16s; }
.side-menu.is-open .side-menu__section:nth-child(3) { transition-delay: 0.22s; }

.side-menu__toggle {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
    padding: 20px 0;
    color: var(--color-text);
    text-align: left;
}

.side-menu__number {
    width: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.side-menu__name {
    font-size: 1.6rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1;
    transition: transform 0.4s var(--ease-out-expo);
}

.side-menu__toggle:hover .side-menu__name {
    transform: translateX(4px);
}

/* + that turns into − while the section is open */
.side-menu__icon {
    position: relative;
    width: 12px;
    height: 12px;
    margin-left: auto;
}

.side-menu__icon::before,
.side-menu__icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 1.5px;
    margin-top: -0.75px;
    background: currentColor;
    transition: transform 0.4s var(--ease-out-expo);
}

.side-menu__icon::after {
    transform: rotate(90deg);
}

.side-menu__toggle[aria-expanded="true"] .side-menu__icon::after {
    transform: rotate(0deg);
}

.side-menu__projects {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.5s var(--ease-out-expo);
}

.side-menu__toggle[aria-expanded="true"] + .side-menu__projects {
    grid-template-rows: 1fr;
}

.side-menu__projects ul {
    min-height: 0;
    overflow: hidden;
    list-style: none;
}

.side-menu__projects li:last-child {
    padding-bottom: 16px;
}

.side-menu__project {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0 8px 36px;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-light);
    transition: color 0.3s ease, transform 0.4s var(--ease-out-expo);
}

/* Violet dot on hover and on the project shown on this page */
.side-menu__project::before {
    content: '';
    flex: none;
    width: 6px;
    height: 6px;
    margin-left: -16px;
    border-radius: 50%;
    background: var(--color-accent-violet);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.side-menu__project:hover,
.side-menu__project[aria-current="page"] {
    color: var(--color-text);
}

.side-menu__project:hover {
    transform: translateX(4px);
}

.side-menu__project:hover::before,
.side-menu__project[aria-current="page"]::before {
    opacity: 1;
}

/* Main pages: only on tablet and mobile, where the nav links are hidden */
.side-menu__pages {
    display: none;
    margin-top: 32px;
    list-style: none;
}

.side-menu__page {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-light);
    transition: color 0.3s ease;
}

.side-menu__page:hover,
.side-menu__page[aria-current="page"] {
    color: var(--color-text);
}

.side-menu__page[aria-current="page"]::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-accent-violet);
}