/* ============================================
   PORTAFOLIO MARTINA PÉREZ MARÍN
   Sistema visual editorial
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500&display=swap');

:root {
    --bg: #f4f1ec;
    --bg-alt: #ebe7e0;
    --ink: #1a1a1a;
    --ink-soft: #555;
    --ink-muted: #8a8580;
    --line: #d8d3cb;
    --accent: #8b1e1e;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Fraunces', Georgia, serif;

    --max: 1600px;
    --gutter: clamp(20px, 4vw, 60px);

    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; transition: opacity .3s var(--ease); }
a:hover { opacity: .6; }

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ============================================
   NAVEGACIÓN
   ============================================ */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 20px var(--gutter);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(244, 241, 236, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color .4s var(--ease);
    font-size: 12px;
    letter-spacing: 0.04em;
}

.nav.scrolled { border-bottom-color: var(--line); }

.nav__brand {
    font-weight: 500;
    letter-spacing: 0.02em;
}

.nav__brand a { display: inline-block; }

.nav__links {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav__links a {
    position: relative;
    padding: 4px 0;
}

.nav__links a::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--ink);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform .4s var(--ease);
}

.nav__links a:hover { opacity: 1; }
.nav__links a:hover::after { transform: scaleX(1); transform-origin: left; }

.nav__toggle {
    display: none;
    width: 30px;
    height: 30px;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
}

.nav__toggle span {
    display: block;
    width: 22px;
    height: 1px;
    background: var(--ink);
    transition: transform .3s var(--ease);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh;
    padding: 120px var(--gutter) 80px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: end;
    position: relative;
}

.hero__meta {
    display: flex;
    flex-direction: column;
    gap: 40px;
    padding-bottom: 20px;
}

.hero__label {
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink-muted);
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero__label::before {
    content: '';
    width: 30px;
    height: 1px;
    background: var(--ink-muted);
}

.hero__title {
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(48px, 8vw, 128px);
    line-height: 0.92;
    letter-spacing: -0.03em;
}

.hero__title em {
    font-style: italic;
    font-weight: 300;
}

.hero__sub {
    max-width: 380px;
    font-size: 15px;
    line-height: 1.6;
    color: var(--ink-soft);
}

.hero__visual {
    position: relative;
    aspect-ratio: 4/5;
    overflow: hidden;
    background: var(--bg-alt);
}

.hero__visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(15%);
    transition: transform 1.2s var(--ease);
}

.hero:hover .hero__visual img { transform: scale(1.03); }

.hero__caption {
    position: absolute;
    bottom: 20px;
    left: 20px;
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #fff;
    mix-blend-mode: difference;
}

.hero__index {
    position: absolute;
    top: 110px;
    right: var(--gutter);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-muted);
    text-align: right;
    line-height: 1.8;
}

/* ============================================
   MARQUEE / TICKER
   ============================================ */
.ticker {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 18px 0;
    overflow: hidden;
    white-space: nowrap;
}

.ticker__track {
    display: inline-flex;
    gap: 60px;
    animation: ticker 40s linear infinite;
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.ticker__track span { display: inline-block; }
.ticker__track span::after { content: '◦'; margin-left: 60px; color: var(--ink-muted); }

@keyframes ticker {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* ============================================
   SECCIÓN GENÉRICA
   ============================================ */
.section {
    padding: 120px var(--gutter);
    border-top: 1px solid var(--line);
}

.section__head {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 60px;
    margin-bottom: 80px;
    align-items: start;
}

.section__label {
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink-muted);
    padding-top: 8px;
}

.section__title {
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(32px, 4.5vw, 64px);
    line-height: 1;
    letter-spacing: -0.02em;
    max-width: 14ch;
}

/* ============================================
   ABOUT
   ============================================ */
.about {
    display: grid;
    grid-template-columns: 200px 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about__portrait {
    aspect-ratio: 3/4;
    background: var(--bg-alt);
    overflow: hidden;
}

.about__portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(20%);
}

.about__text {
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(20px, 1.8vw, 26px);
    line-height: 1.4;
    letter-spacing: -0.01em;
    color: var(--ink);
}

.about__text p + p { margin-top: 1.4em; }

.about__details {
    margin-top: 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--line);
}

.about__detail h4 {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-muted);
    font-weight: 500;
    margin-bottom: 12px;
}

.about__detail p {
    font-family: var(--font-sans);
    font-size: 13px;
    line-height: 1.6;
    color: var(--ink-soft);
}

/* ============================================
   PROYECTOS — FILTROS
   ============================================ */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 60px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line);
}

.filter {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    padding: 8px 16px;
    border-radius: 100px;
    border: 1px solid var(--line);
    color: var(--ink-soft);
    transition: all .35s var(--ease);
}

.filter:hover {
    border-color: var(--ink);
    color: var(--ink);
}

.filter.is-active {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
}

.filter__count {
    margin-left: 6px;
    font-size: 9px;
    opacity: .6;
}

/* ============================================
   GRILLA DE PROYECTOS
   ============================================ */
.projects {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 60px 30px;
}

.project {
    grid-column: span 6;
    display: flex;
    flex-direction: column;
    transition: opacity .5s var(--ease), transform .5s var(--ease);
}

.project.is-hidden {
    display: none;
}

.project:nth-child(4n+1) { grid-column: span 7; }
.project:nth-child(4n+2) { grid-column: span 5; margin-top: 80px; }
.project:nth-child(4n+3) { grid-column: span 5; }
.project:nth-child(4n+4) { grid-column: span 7; margin-top: 60px; }

.project__media {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--bg-alt);
    margin-bottom: 20px;
}

.project__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1.2s var(--ease), filter .6s var(--ease);
}

.project:hover .project__media img {
    transform: scale(1.04);
    filter: brightness(.95);
}

.project__number {
    position: absolute;
    top: 16px;
    left: 16px;
    font-size: 10px;
    letter-spacing: 0.16em;
    color: #fff;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    padding: 4px 10px;
    border-radius: 2px;
}

.project__meta {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: start;
    padding-top: 8px;
}

.project__cat {
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 8px;
}

.project__title {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(22px, 2.2vw, 32px);
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.project__desc {
    font-size: 14px;
    line-height: 1.55;
    color: var(--ink-soft);
    max-width: 50ch;
}

.project__year {
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--ink-muted);
    padding-top: 4px;
}

.project__link {
    margin-top: 16px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--ink);
    align-self: flex-start;
    transition: gap .35s var(--ease);
}

.project__link:hover { opacity: 1; gap: 14px; }
.project__link span:last-child { transition: transform .35s var(--ease); }
.project__link:hover span:last-child { transform: translateX(2px); }

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: 100px var(--gutter) 40px;
    border-top: 1px solid var(--line);
}

.footer__top {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 60px;
    margin-bottom: 80px;
    align-items: end;
}

.footer__big {
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(40px, 6vw, 96px);
    line-height: 1;
    letter-spacing: -0.03em;
}

.footer__big em { font-style: italic; }

.footer__mail {
    font-size: 13px;
    letter-spacing: 0.04em;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--ink);
}

.footer__bottom {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--line);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.footer__col h5 {
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 12px;
}

.footer__col a {
    display: block;
    margin-bottom: 6px;
    color: var(--ink-soft);
}

/* ============================================
   PROYECTO INDIVIDUAL
   ============================================ */
.project-hero {
    padding: 140px var(--gutter) 60px;
}

.project-hero__crumb {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 40px;
}

.project-hero__crumb a { color: var(--ink); }

.project-hero__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: end;
    margin-bottom: 60px;
}

.project-hero__title {
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(48px, 7vw, 110px);
    line-height: 0.92;
    letter-spacing: -0.03em;
}

.project-hero__title em { font-style: italic; }

.project-hero__data {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding-bottom: 20px;
}

.data-item h6 {
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 8px;
    font-weight: 500;
}

.data-item p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--ink);
}

.project-hero__image {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--bg-alt);
    margin-top: 40px;
}

.project-hero__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================================
   PROJECT SECTIONS
   ============================================ */
.proj-section {
    padding: 80px var(--gutter);
    border-top: 1px solid var(--line);
}

.proj-section__head {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.proj-section__num {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.proj-section__title {
    font-family: var(--font-serif);
    font-weight: 300;
    font-size: clamp(28px, 3.5vw, 48px);
    line-height: 1.05;
    letter-spacing: -0.02em;
    max-width: 18ch;
}

.proj-section__body {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 60px;
}

.proj-section__body > div:nth-child(2) {
    max-width: 70ch;
    font-size: 16px;
    line-height: 1.65;
    color: var(--ink);
}

.proj-section__body p + p { margin-top: 1em; }

.proj-section__body h4 {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 22px;
    margin-top: 1.5em;
    margin-bottom: .5em;
    letter-spacing: -0.01em;
}

.proj-section__body ul {
    list-style: none;
    padding-left: 0;
    margin: 1em 0;
}

.proj-section__body li {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 16px;
    font-size: 15px;
    color: var(--ink-soft);
}

.proj-section__body li::before {
    content: attr(data-num);
    font-family: var(--font-sans);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--ink-muted);
    padding-top: 4px;
}

/* ============================================
   GALERÍA DE IMÁGENES DE PROYECTO
   ============================================ */
.proj-gallery {
    padding: 60px var(--gutter);
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
}

.proj-gallery figure {
    overflow: hidden;
    background: transparent;
    display: block;
    line-height: 0;
}

.proj-gallery figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 1s var(--ease);
}

.proj-gallery figure:hover img { transform: scale(1.03); }

.proj-gallery .full { grid-column: span 12; aspect-ratio: 16/8; }
.proj-gallery .half { grid-column: span 6; aspect-ratio: 4/5; }
.proj-gallery .third { grid-column: span 4; aspect-ratio: 1/1; }
.proj-gallery .two-third { grid-column: span 8; aspect-ratio: 16/10; }

/* ============================================
   PROJECT NAV (next / prev)
   ============================================ */
.proj-nav {
    padding: 60px var(--gutter) 100px;
    border-top: 1px solid var(--line);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.proj-nav a {
    display: block;
    padding: 30px 0;
}

.proj-nav a:nth-child(2) { text-align: right; }

.proj-nav small {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-muted);
    display: block;
    margin-bottom: 12px;
}

.proj-nav strong {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(24px, 3vw, 40px);
    letter-spacing: -0.02em;
}

/* ============================================
   ANIMACIONES DE ENTRADA
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .8s var(--ease), transform .8s var(--ease);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE — TABLET
   ============================================ */
@media (max-width: 1024px) {
    .nav__links { gap: 24px; }

    .hero {
        grid-template-columns: 1fr;
        padding-top: 100px;
        gap: 40px;
    }

    .hero__index { position: static; text-align: left; margin-top: 0; }

    .section__head, .about, .proj-section__head, .proj-section__body {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .project { grid-column: span 12 !important; margin-top: 0 !important; }

    .footer__bottom { grid-template-columns: 1fr 1fr; }
    .footer__top { grid-template-columns: 1fr; align-items: start; }

    .project-hero__grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .proj-gallery .half, .proj-gallery .third, .proj-gallery .two-third {
        grid-column: span 12;
    }
}

/* ============================================
   RESPONSIVE — MOBILE
   ============================================ */
@media (max-width: 640px) {
    .nav { padding: 16px 24px; }

    .nav__links {
        position: fixed;
        inset: 0;
        background: var(--bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 30px;
        font-size: 20px;
        transform: translateY(-100%);
        transition: transform .5s var(--ease);
    }

    .nav__links.is-open { transform: translateY(0); }
    .nav__toggle { display: flex; }

    .hero { padding: 100px 24px 60px; }
    .section { padding: 80px 24px; }
    .footer { padding: 60px 24px 30px; }
    .footer__bottom { grid-template-columns: 1fr; }

    .about__details { grid-template-columns: 1fr; }

    .project-hero { padding: 100px 24px 40px; }
    .proj-section { padding: 60px 24px; }
    .proj-gallery { padding: 40px 24px; }
    .proj-nav { padding: 40px 24px 80px; grid-template-columns: 1fr; }
    .proj-nav a:nth-child(2) { text-align: left; }
}