:root {
    --cyan: #20c4df;
    --ink: #050505;
    --paper: #f2f0e9;
    --line: rgba(255, 255, 255, 0.18);
}

::selection {
    background: var(--cyan);
    color: #000;
}

body {
    background: var(--ink);
}

html,
body {
    max-width: 100%;
    overflow-x: clip;
}

#manifesto,
#nosotros,
footer {
    overflow: hidden;
}

a,
button,
input,
select,
textarea {
    outline-offset: 5px;
}

:focus-visible {
    outline: 2px solid var(--cyan);
}

/* Navigation */
#nav {
    padding: 1.4rem clamp(1.25rem, 3vw, 3.5rem);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

#nav.scrolled {
    padding: 1rem clamp(1.25rem, 3vw, 3.5rem);
}

.nav-links {
    margin-left: auto;
    margin-right: clamp(2rem, 4vw, 5rem);
}

.nav-cta {
    color: #000;
    background: var(--cyan);
    padding: 0.8rem 1.1rem;
    text-decoration: none;
    font-family: "Reem Kufi", sans-serif;
    font-weight: 600;
    font-size: 0.64rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    transition: background 0.2s, color 0.2s;
}

.nav-cta:hover {
    background: #fff;
}

.menu-toggle,
.mobile-menu {
    display: none;
}

/* Hero */
#hero {
    height: 100svh;
    min-height: 680px;
    align-items: flex-start;
    justify-content: flex-end;
    padding: 8rem clamp(1.5rem, 5vw, 5rem) clamp(3rem, 7vh, 5.5rem);
    isolation: isolate;
}

.hero-media,
.hero-shade {
    position: absolute;
    inset: 0;
}

.hero-media {
    z-index: -3;
}

.hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 58%;
    animation: heroScale 1.8s cubic-bezier(.2,.7,.2,1) both;
}

.hero-shade {
    z-index: -2;
    background:
        linear-gradient(90deg, rgba(0, 0, 0, 0.88) 0%, rgba(0, 0, 0, 0.58) 45%, rgba(0, 0, 0, 0.08) 77%),
        linear-gradient(0deg, rgba(0, 0, 0, 0.74) 0%, transparent 42%),
        linear-gradient(180deg, rgba(0, 0, 0, 0.48) 0%, transparent 28%);
}

.hero-logo-wrap,
#hero > .iso-deco {
    display: none;
}

.hero-eyebrow {
    position: absolute;
    top: 8.5rem;
    left: clamp(1.5rem, 5vw, 5rem);
    right: clamp(1.5rem, 5vw, 5rem);
    z-index: 2;
    display: flex;
    justify-content: space-between;
    max-width: 45rem;
    font-family: "Reem Kufi", sans-serif;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.65rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeUp 0.8s 0.15s forwards;
}

.hero-eyebrow::before {
    content: "";
    width: 2.5rem;
    height: 2px;
    margin: 0.45rem 1rem 0 0;
    background: var(--cyan);
    flex: none;
}

.hero-headline {
    position: relative;
    z-index: 2;
    max-width: 11ch;
    text-align: left;
    font-size: clamp(4.2rem, 9vw, 9.2rem);
    line-height: 0.82;
    letter-spacing: -0.045em;
    font-weight: 500;
    text-wrap: balance;
}

.hero-headline span {
    color: var(--cyan);
}

.hero-sub {
    position: relative;
    z-index: 2;
    margin-top: 2rem;
    font-size: 0.64rem;
    letter-spacing: 0.24em;
    color: rgba(255, 255, 255, 0.72);
}

.hero-actions {
    position: relative;
    z-index: 2;
    display: flex;
    gap: 0.75rem;
    margin-top: 2rem;
    opacity: 0;
    animation: fadeUp 0.9s 1s forwards;
}

.hero-action {
    min-width: 13rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    padding: 1rem 1.15rem;
    border: 1px solid rgba(255, 255, 255, 0.45);
    color: #fff;
    text-decoration: none;
    font-family: "Reem Kufi", sans-serif;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.hero-action-primary {
    background: var(--cyan);
    border-color: var(--cyan);
    color: #000;
}

.hero-action:hover {
    background: #fff;
    border-color: #fff;
    color: #000;
}

.hero-project-note {
    position: absolute;
    right: clamp(1.5rem, 5vw, 5rem);
    bottom: clamp(3rem, 7vh, 5.5rem);
    z-index: 2;
    padding-left: 1.25rem;
    border-left: 2px solid var(--cyan);
    text-align: right;
    opacity: 0;
    animation: fadeUp 0.9s 1.1s forwards;
}

.hero-project-note span,
.hero-project-note strong {
    display: block;
    font-family: "Reem Kufi", sans-serif;
    text-transform: uppercase;
}

.hero-project-note span {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.56rem;
    letter-spacing: 0.23em;
}

.hero-project-note strong {
    margin-top: 0.35rem;
    font-size: 0.9rem;
    letter-spacing: 0.12em;
}

.hero-scroll-hint {
    left: auto;
    right: 1.1rem;
    bottom: 50%;
    transform: translateY(50%);
}

@keyframes heroScale {
    from { opacity: 0; transform: scale(1.055); }
    to { opacity: 1; transform: scale(1); }
}

/* Portfolio as an architectural case study */
#portafolio {
    padding-top: clamp(7rem, 11vw, 11rem);
}

.portfolio-header {
    max-width: 1400px;
    padding-left: clamp(1.5rem, 5vw, 5rem);
    padding-right: clamp(1.5rem, 5vw, 5rem);
    margin-bottom: 0;
}

.project-intro {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem clamp(1.5rem, 5vw, 5rem) 4.5rem;
    display: grid;
    grid-template-columns: 1fr 2fr 1.4fr;
    gap: clamp(2rem, 6vw, 7rem);
    align-items: start;
}

.project-number,
.project-intro dt,
.project-intro dd {
    font-family: "Reem Kufi", sans-serif;
    text-transform: uppercase;
}

.project-number {
    color: var(--cyan);
    font-size: 0.62rem;
    letter-spacing: 0.18em;
}

.project-intro > p {
    max-width: 30ch;
    font-size: clamp(1.35rem, 2.4vw, 2.25rem);
    line-height: 1.22;
    letter-spacing: -0.025em;
}

.project-intro dl {
    display: grid;
    gap: 0.9rem;
}

.project-intro dl div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 0.7rem;
    border-bottom: 1px solid var(--line);
}

.project-intro dt,
.project-intro dd {
    font-size: 0.57rem;
    letter-spacing: 0.14em;
}

.project-intro dt { color: rgba(255, 255, 255, 0.42); }
.project-intro dd { color: #fff; text-align: right; }

.portfolio-featured {
    width: calc(100% - clamp(2rem, 5vw, 5rem));
    margin: 0 auto;
    max-width: 1600px;
    max-height: none;
}

.portfolio-featured img {
    height: min(80vh, 900px);
    min-height: 540px;
    filter: brightness(0.9);
}

.portfolio-grid {
    max-width: 1600px;
    margin: clamp(0.5rem, 1vw, 1rem) auto 0;
    padding: 0 clamp(1rem, 2.5vw, 2.5rem);
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: clamp(0.5rem, 1vw, 1rem);
}

.pgrid-item {
    grid-column: span 4;
    aspect-ratio: 4 / 3;
}

.pgrid-item:nth-child(1),
.pgrid-item:nth-child(6),
.pgrid-item:nth-child(8),
.pgrid-item:nth-child(12) {
    grid-column: span 7;
}

.pgrid-item:nth-child(2),
.pgrid-item:nth-child(5),
.pgrid-item:nth-child(7),
.pgrid-item:nth-child(11) {
    grid-column: span 5;
}

.pgrid-item:nth-child(1),
.pgrid-item:nth-child(2),
.pgrid-item:nth-child(6),
.pgrid-item:nth-child(7),
.pgrid-item:nth-child(8),
.pgrid-item:nth-child(11),
.pgrid-item:nth-child(12) {
    aspect-ratio: 16 / 10;
}

.pgrid-label {
    opacity: 1;
    transform: none;
}

.portfolio-video {
    max-width: 1600px;
    margin: clamp(0.5rem, 1vw, 1rem) auto 0;
    padding: 0 clamp(1rem, 2.5vw, 2.5rem);
}

.portfolio-video video {
    width: 100%;
    max-height: 76vh;
    background: #090909;
}

/* Content polish */
#manifesto,
#servicios,
#nosotros,
#proceso,
#contacto {
    padding-top: clamp(7rem, 11vw, 12rem);
    padding-bottom: clamp(7rem, 11vw, 12rem);
}

.srv-row {
    transition: padding 0.25s ease, background 0.25s ease;
}

.srv-row:hover {
    padding-left: 1rem;
    padding-right: 1rem;
    background: rgba(31, 179, 229, 0.07);
}

.form-trap {
    display: none;
}

.form-status {
    min-height: 1.4rem;
    color: var(--cyan);
    font-size: 0.78rem;
}

.form-submit[disabled] {
    opacity: 0.55;
    cursor: wait;
}

/* Mobile */
@media (max-width: 768px) {
    #nav { padding: 1.1rem 1.25rem; }
    #nav.scrolled { padding: 0.85rem 1.25rem; }
    .nav-cta { display: none; }

    .menu-toggle {
        display: flex;
        align-items: center;
        gap: 0.7rem;
        border: 0;
        background: transparent;
        color: #fff;
        font-family: "Reem Kufi", sans-serif;
        font-size: 0.62rem;
        letter-spacing: 0.18em;
        text-transform: uppercase;
    }

    .menu-toggle i,
    .menu-toggle i::before {
        display: block;
        width: 1.6rem;
        height: 1px;
        background: var(--cyan);
        content: "";
        transition: transform 0.25s;
    }

    .menu-toggle i::before { transform: translateY(6px); }
    .menu-toggle[aria-expanded="true"] i { transform: rotate(45deg); }
    .menu-toggle[aria-expanded="true"] i::before { transform: rotate(-90deg); }

    .mobile-menu {
        position: fixed;
        inset: 0;
        z-index: 90;
        padding: 8rem 1.5rem 2rem;
        display: flex;
        flex-direction: column;
        justify-content: center;
        background: rgba(2, 2, 2, 0.98);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-1rem);
        transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
    }

    .mobile-menu.open {
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .mobile-menu a {
        display: flex;
        align-items: baseline;
        gap: 1.2rem;
        padding: 0.85rem 0;
        border-bottom: 1px solid var(--line);
        color: #fff;
        text-decoration: none;
        font-family: "Reem Kufi", sans-serif;
        font-size: clamp(2.2rem, 12vw, 4rem);
        line-height: 1;
    }

    .mobile-menu a span {
        color: var(--cyan);
        font-size: 0.6rem;
        letter-spacing: 0.14em;
    }

    body.menu-open { overflow: hidden; }

    #hero {
        min-height: 650px;
        padding: 7rem 1.5rem 3rem;
        justify-content: flex-end;
    }

    .hero-media img { object-position: 64% center; }
    .hero-shade {
        background:
            linear-gradient(0deg, rgba(0,0,0,.95) 0%, rgba(0,0,0,.42) 63%, rgba(0,0,0,.6) 100%),
            linear-gradient(90deg, rgba(0,0,0,.45), transparent);
    }

    .hero-eyebrow {
        top: 6.8rem;
        left: 1.5rem;
        right: 1.5rem;
    }

    .hero-eyebrow span { display: none; }
    .hero-headline { font-size: clamp(3.6rem, 17vw, 6rem); }
    .hero-sub { line-height: 1.7; }
    .hero-actions { width: 100%; flex-direction: column; }
    .hero-action { width: 100%; }
    .hero-project-note,
    .hero-scroll-hint { display: none; }

    .portfolio-header {
        align-items: flex-start;
        gap: 2rem;
    }

    .portfolio-project-tag { text-align: left; }

    .project-intro {
        grid-template-columns: 1fr;
        gap: 1.8rem;
        padding-top: 2rem;
        padding-bottom: 3rem;
    }

    .project-intro > p { font-size: 1.5rem; }
    .portfolio-featured { width: calc(100% - 2rem); }
    .portfolio-featured img { height: 62vh; min-height: 420px; }
    .portfolio-featured-caption { left: 1.25rem; bottom: 1.25rem; }

    .portfolio-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
        gap: 0.75rem;
    }

    .pgrid-item,
    .pgrid-item:nth-child(n) {
        grid-column: 1;
        aspect-ratio: 4 / 3;
    }

    .portfolio-video { padding: 0 1rem; }

    .srv-row {
        display: grid;
        grid-template-columns: 2.5rem minmax(0, 1fr) auto;
        gap: 0.7rem 0.8rem;
        align-items: center;
    }

    .srv-name {
        min-width: 0;
        line-height: 1.15;
    }

    .srv-desc {
        grid-column: 2 / 4;
        max-width: none;
    }

    .srv-arrow {
        grid-column: 3;
        grid-row: 1;
    }
}

@media (pointer: coarse) {
    #cursor,
    #cursor-ring { display: none; }
    body { cursor: auto; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}