/* ═══════════════════════════════════════════════
   CONCEPT CARGO v3 — main.css
   Cargo Graphic A001 aesthetic + CNCPT data layer
   B&W + #E8FF00 · Inter Tight · Mobile first
   ═══════════════════════════════════════════════ */

:root {
    --font: 'Inter Tight', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --black: #000;
    --white: #fff;
    --bg: #fff;
    --fg: #000;
    --gray: #666;
    --gray-light: #999;
    --gray-border: #e0e0e0;
    --yellow: #E8FF00;
    --yellow-dark: #C8DC00;
    --fs-nav: 0.7rem;
    --fs-hero: clamp(2.8rem, 10vw + 1rem, 8rem);
    --fs-section: clamp(1.4rem, 3vw, 2.2rem);
    --fs-body: 0.95rem;
    --fs-small: 0.78rem;
    --fs-micro: 0.65rem;
    --pad: clamp(16px, 4vw, 32px);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --dur: 0.35s;
}

/* ── Reset ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; }
body {
    font-family: var(--font); font-size: var(--fs-body); line-height: 1.55;
    color: var(--fg); background: var(--bg); overflow-x: hidden;
    opacity: 0; transition: opacity .5s var(--ease);
}
body.is-visible { opacity: 1; }
body.is-leaving { opacity: 0 !important; transition: opacity .4s ease !important; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
::selection { background: var(--yellow); color: var(--black); }

/* ═══ HEADER ═══════════════════════════════════ */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: var(--white); border-bottom: 1px solid var(--black);
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px var(--pad); height: 48px;
}
.site-logo {
    font-size: 0.75rem; font-weight: 700;
    letter-spacing: 0.04em; text-transform: uppercase;
}
.site-logo a { display: flex; align-items: center; gap: 5px; }
.logo-dot { width: 6px; height: 6px; background: var(--yellow); border-radius: 50%; }
.site-nav ul { display: flex; gap: 20px; }
.site-nav a {
    font-size: var(--fs-nav); font-weight: 500;
    letter-spacing: 0.03em; text-transform: uppercase;
    transition: color var(--dur);
}
.site-nav a:hover { color: var(--gray); }
.header-social {
    font-size: var(--fs-micro); font-weight: 500;
    letter-spacing: 0.04em; text-transform: uppercase;
    color: var(--gray-light); border-left: 1px solid var(--gray-border);
    padding-left: 20px; margin-left: 4px;
}
.header-social:hover { color: var(--black); }

/* Hamburger */
.menu-toggle {
    display: none; width: 24px; height: 24px;
    flex-direction: column; justify-content: center; align-items: center; gap: 5px;
}
.menu-toggle span { display: block; width: 20px; height: 1.5px; background: var(--black); transition: all var(--dur) var(--ease); }
.menu-toggle.is-open span:nth-child(1) { transform: rotate(45deg) translate(2px, 2px); }
.menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.menu-toggle.is-open span:nth-child(3) { transform: rotate(-45deg) translate(2px, -2px); }

@media (max-width: 640px) {
    .menu-toggle { display: flex; }
    .header-social { display: none; }
    .site-nav {
        position: fixed; inset: 0; top: 48px;
        background: var(--white); border-top: 1px solid var(--black);
        display: flex; flex-direction: column; justify-content: center; align-items: center;
        opacity: 0; pointer-events: none; transition: opacity var(--dur) var(--ease);
    }
    .site-nav.is-open { opacity: 1; pointer-events: auto; }
    .site-nav ul { flex-direction: column; gap: 32px; text-align: center; }
    .site-nav a { font-size: 1.4rem; }
}

/* ═══ HERO ═════════════════════════════════════ */
.hero { padding: 80px var(--pad) 40px; border-bottom: 1px solid var(--black); }
.hero__title {
    font-size: var(--fs-hero); font-weight: 700; line-height: 0.92;
    letter-spacing: -0.03em; text-transform: uppercase; margin-bottom: 32px;
}
.hero__title sup { font-size: 0.3em; vertical-align: super; font-weight: 400; }

/* Marquee */
.hero__marquee {
    width: 100%; overflow: hidden;
    border-top: 1px solid var(--gray-border); border-bottom: 1px solid var(--gray-border);
    padding: 12px 0; margin-bottom: 32px;
}
.hero__marquee-track {
    display: flex; gap: 12px;
    animation: marquee 30s linear infinite; width: max-content;
}
.hero__marquee-track img {
    height: 180px; width: auto; object-fit: cover;
    filter: grayscale(100%); transition: filter var(--dur) var(--ease);
}
.hero__marquee-track img:hover { filter: grayscale(0%); }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

.hero__desc {
    font-size: clamp(1rem, 2vw, 1.25rem); line-height: 1.5;
    max-width: 60ch; color: var(--gray);
}
.hero__desc a {
    color: var(--black); font-weight: 600;
    border-bottom: 1px solid var(--yellow); transition: border-color var(--dur);
}
.hero__desc a:hover { border-color: var(--black); }

/* ═══ CLIENT LIST ══════════════════════════════ */
.client-list { border-bottom: 1px solid var(--black); }
.client-list__row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px var(--pad); border-bottom: 1px solid var(--gray-border);
    font-size: var(--fs-small); transition: all var(--dur) var(--ease); cursor: pointer;
}
.client-list__row:last-child { border-bottom: none; }
.client-list__row:hover { background: var(--black); color: var(--white); }
.client-list__name { font-weight: 600; text-transform: uppercase; letter-spacing: 0.02em; }
.client-list__type { color: var(--gray); font-size: var(--fs-micro); letter-spacing: 0.05em; text-transform: uppercase; transition: color var(--dur); }
.client-list__row:hover .client-list__type { color: var(--gray-light); }

/* ═══ SELECTED WORK ════════════════════════════ */
.selected-work { padding: 40px var(--pad); }
.selected-work__header {
    display: flex; justify-content: space-between; align-items: baseline;
    margin-bottom: 32px; border-bottom: 1px solid var(--black); padding-bottom: 16px;
}
.selected-work__title { font-size: var(--fs-section); font-weight: 700; text-transform: uppercase; letter-spacing: -0.01em; }
.selected-work__link {
    font-size: var(--fs-small); font-weight: 600; letter-spacing: 0.03em; text-transform: uppercase;
    border-bottom: 1px solid var(--yellow); padding-bottom: 2px; transition: border-color var(--dur);
}
.selected-work__link:hover { border-color: var(--black); }

/* Grid */
.work-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.work-card { position: relative; overflow: hidden; aspect-ratio: 4/3; background: #f0f0f0; cursor: pointer; display: block; }
.work-card__img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s var(--ease), filter var(--dur) var(--ease);
    filter: grayscale(100%);
}
.work-card:hover .work-card__img { transform: scale(1.04); filter: grayscale(0%); }
.work-card__overlay {
    position: absolute; inset: 0; background: rgba(0,0,0,0.75);
    display: flex; flex-direction: column; justify-content: flex-end; padding: 16px;
    opacity: 0; transition: opacity var(--dur) var(--ease);
}
.work-card:hover .work-card__overlay { opacity: 1; }
.work-card__name { color: var(--white); font-size: var(--fs-body); font-weight: 600; text-transform: uppercase; letter-spacing: 0.02em; }
.work-card__type { color: var(--yellow); font-size: var(--fs-micro); font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; margin-top: 4px; }

/* ═══ SINGLE PORTFOLIO ═════════════════════════ */
.proyecto-hero {
    position: relative; width: 100%; height: 100vh; min-height: 500px; overflow: hidden;
    display: flex; align-items: flex-end;
}
.proyecto-hero__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.proyecto-hero__overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.15) 50%, transparent 100%);
}
.proyecto-hero__content { position: relative; z-index: 2; padding: 40px var(--pad); color: var(--white); width: 100%; }
.proyecto-hero__title {
    font-size: clamp(2.5rem, 8vw, 6rem); font-weight: 700; line-height: 0.92;
    letter-spacing: -0.03em; text-transform: uppercase;
}
.proyecto-hero__sub {
    font-size: var(--fs-small); font-weight: 500; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--yellow); margin-top: 12px;
}
.proyecto-hero--text { background: var(--black); height: auto; min-height: 50vh; padding-top: 80px; }

/* Ficha */
.proyecto-ficha {
    display: grid; grid-template-columns: 240px 1fr; gap: 48px;
    padding: 48px var(--pad); border-bottom: 1px solid var(--gray-border);
}
.proyecto-datos { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 72px; align-self: start; }
.proyecto-dato__label {
    font-size: var(--fs-micro); font-weight: 600; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--gray-light); margin-bottom: 2px;
}
.proyecto-dato__value { font-size: var(--fs-body); font-weight: 500; }
.proyecto-dato__value a { border-bottom: 1px solid var(--yellow); transition: border-color var(--dur); }
.proyecto-dato__value a:hover { border-color: var(--black); }

.proyecto-texto { font-size: clamp(1rem, 1.5vw, 1.15rem); line-height: 1.6; max-width: 50ch; }
.proyecto-texto p + p { margin-top: 1em; }

/* CTA button — same as original theme */
.btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-size: var(--fs-small); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
    padding: 12px 24px; border: 1px solid var(--fg); background: transparent; color: var(--fg);
    cursor: pointer; transition: background var(--dur), color var(--dur); margin-top: 24px;
}
.btn:hover { background: var(--fg); color: var(--bg); }
.btn__arrow { transition: transform 0.2s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }

/* Gallery */
.single-gallery { display: flex; flex-direction: column; max-width: 1000px;}
.single-gallery__img {
    width: 100%; height: auto; display: block; border-bottom: 1px solid var(--gray-border);
    opacity: 0; transition: opacity 0.6s var(--ease);
}
.single-gallery__img.is-loaded { opacity: 1; }

/* Nav prev/next */
.proyecto-nav { display: flex; border-top: 1px solid var(--black); }
.proyecto-nav__link {
    flex: 1; padding: 32px var(--pad); display: flex; flex-direction: column; gap: 6px;
    transition: all var(--dur) var(--ease);
}
.proyecto-nav__link + .proyecto-nav__link { border-left: 1px solid var(--black); text-align: right; }
.proyecto-nav__link:hover { background: var(--black); color: var(--white); }
.proyecto-nav__label {
    font-size: var(--fs-micro); font-weight: 600; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--gray-light); transition: color var(--dur);
}
.proyecto-nav__link:hover .proyecto-nav__label { color: var(--yellow); }
.proyecto-nav__name { font-size: clamp(1.2rem, 3vw, 1.8rem); font-weight: 700; text-transform: uppercase; letter-spacing: -0.01em; }

/* ═══ GENERIC PAGE ═════════════════════════════ */
.page-generic { padding: 80px var(--pad) 48px; min-height: 80vh; }
.page-generic__title {
    font-size: clamp(2rem, 5vw, 4rem); font-weight: 700; text-transform: uppercase;
    letter-spacing: -0.02em; border-bottom: 1px solid var(--black); padding-bottom: 24px; margin-bottom: 32px;
}
.page-generic__content { font-size: clamp(1rem, 1.5vw, 1.15rem); line-height: 1.6; max-width: 55ch; }
.page-generic__content a { border-bottom: 1px solid var(--yellow); transition: border-color var(--dur); }
.page-generic__content a:hover { border-color: var(--black); }

/* ═══ FOOTER ═══════════════════════════════════ */
.site-footer {
    border-top: 1px solid var(--black); padding: 20px var(--pad);
    display: flex; justify-content: space-between; align-items: center;
    font-size: var(--fs-micro); font-weight: 500; letter-spacing: 0.04em;
    text-transform: uppercase; color: var(--gray);
}
.site-footer a:hover { color: var(--black); }
.footer-links { display: flex; gap: 16px; }
.footer-copy .yellow { color: var(--yellow-dark); }

/* ═══ ANIMATIONS ═══════════════════════════════ */
.fade-up { opacity: 0; transform: translateY(16px); transition: opacity 0.5s var(--ease), transform 0.5s var(--ease); }
.fade-up.is-visible { opacity: 1; transform: translateY(0); }
.stagger > * { opacity: 0; transform: translateY(12px); transition: opacity 0.4s var(--ease), transform 0.4s var(--ease); }
.stagger.is-visible > * { opacity: 1; transform: translateY(0); }
.stagger.is-visible > *:nth-child(1) { transition-delay: 0.03s; }
.stagger.is-visible > *:nth-child(2) { transition-delay: 0.06s; }
.stagger.is-visible > *:nth-child(3) { transition-delay: 0.09s; }
.stagger.is-visible > *:nth-child(4) { transition-delay: 0.12s; }
.stagger.is-visible > *:nth-child(5) { transition-delay: 0.15s; }
.stagger.is-visible > *:nth-child(6) { transition-delay: 0.18s; }
.stagger.is-visible > *:nth-child(7) { transition-delay: 0.21s; }
.stagger.is-visible > *:nth-child(8) { transition-delay: 0.24s; }
.stagger.is-visible > *:nth-child(9) { transition-delay: 0.27s; }
.stagger.is-visible > *:nth-child(10) { transition-delay: 0.3s; }

/* ═══ RESPONSIVE ═══════════════════════════════ */
@media (max-width: 640px) {
    .proyecto-ficha { grid-template-columns: 1fr; gap: 24px; }
    .proyecto-datos { position: static; flex-direction: row; flex-wrap: wrap; gap: 12px 24px; }
    .proyecto-nav { flex-direction: column; }
    .proyecto-nav__link + .proyecto-nav__link { border-left: none; border-top: 1px solid var(--black); text-align: left; }
    .hero__marquee-track img { height: 120px; }
    .work-grid { grid-template-columns: 1fr; }
    .selected-work__header { flex-direction: column; gap: 8px; }
    .site-footer { flex-direction: column; gap: 8px; text-align: center; }
}