/* =========================================================
   PORTFOLIO — MARTINA TRILLINI
   Full Stack Developer & UX/UI Designer
   ---------------------------------------------------------
   ÍNDICE
   01 · Tokens (variables)
   02 · Reset y base
   03 · Utilidades y componentes
   04 · Header y navegación
   05 · Hero
   06 · Franja resumen
   07 · Sobre mí
   08 · Proyectos
   09 · Stack
   10 · Contacto
   11 · Footer
   12 · Responsive
   13 · Preferencias de movimiento
   ========================================================= */


/* =========================================================
   01 · TOKENS
   ========================================================= */

:root {
    /* --- Paleta base (identidad) --- */
    --cream: #f5f1e9;
    --cream-light: #fbf8f2;

    --black: #101010;
    --black-soft: #171717;

    --gray: #666;
    --line: #bdb8af;

    --pink: #ff66b1;        /* rellenos y fondos */
    --pink-ink: #d81f83;    /* misma familia, legible como texto */

    --lime: #d9f63a;        /* rellenos y fondos */
    --lime-ink: #6f8a00;    /* misma familia, legible como texto */

    /* --- Roles (lo que se usa en el resto del CSS) --- */
    --bg: var(--cream);
    --bg-glow: rgba(255, 102, 177, .10);
    --surface: rgba(255, 255, 255, .38);
    --surface-solid: var(--cream-light);
    --invert-bg: var(--black);
    --invert-fg: #ffffff;

    --fg: var(--black);
    --fg-soft: #3a3a3a;
    --fg-muted: var(--gray);

    --border: rgba(16, 16, 16, .18);
    --border-strong: rgba(16, 16, 16, .38);

    --header-bg: rgba(245, 241, 233, .85);
    --summary-bg: #f0eeea;
    --media-bg: linear-gradient(135deg, #efebe4, #ddd7ce);

    --shadow: 0 18px 40px -28px rgba(16, 16, 16, .55);
    --shadow-lg: 0 30px 60px -34px rgba(16, 16, 16, .65);

    /* --- Tipografía --- */
    --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

    /* --- Medidas --- */
    --gutter: clamp(20px, 4vw, 48px);
    --shell: min(1400px, 100% - var(--gutter) * 2);
    --header-h: 88px;

    --radius-sm: 6px;
    --radius: 14px;
    --radius-lg: 20px;

    /* --- Movimiento --- */
    --ease: cubic-bezier(.22, .61, .36, 1);
    --fast: .18s;
    --base: .32s;
    --slow: .55s;
}


/* Modo oscuro: sólo cambian los roles, la identidad gráfica se mantiene */
[data-theme="dark"] {
    --bg: var(--black);
    --bg-glow: rgba(217, 246, 58, .07);
    --surface: rgba(255, 255, 255, .04);
    --surface-solid: var(--black-soft);
    --invert-bg: #1e1e1e;
    --invert-fg: var(--cream);

    --fg: var(--cream);
    --fg-soft: #d9d4cb;
    --fg-muted: #9c968c;

    --border: rgba(245, 241, 233, .18);
    --border-strong: rgba(245, 241, 233, .42);

    --header-bg: rgba(16, 16, 16, .82);
    --summary-bg: rgba(255, 255, 255, .045);
    --media-bg: linear-gradient(135deg, #232323, #171717);

    --pink-ink: var(--pink);
    --lime-ink: var(--lime);

    --shadow: 0 18px 40px -28px rgba(0, 0, 0, .9);
    --shadow-lg: 0 30px 60px -34px rgba(0, 0, 0, .95);
}


/* =========================================================
   02 · RESET Y BASE
   ========================================================= */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100%;
    background:
        radial-gradient(circle at 82% 6%, var(--bg-glow), transparent 560px),
        var(--bg);
    color: var(--fg);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition:
        background-color var(--base) var(--ease),
        color var(--base) var(--ease);
}

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

ul {
    list-style: none;
}

a {
    color: inherit;
    text-decoration: none;
}

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

h1,
h2,
h3 {
    font-weight: 900;
    letter-spacing: -.04em;
    line-height: 1.05;
    text-wrap: balance;
}

p {
    text-wrap: pretty;
}

section[id] {
    scroll-margin-top: calc(var(--header-h) + 16px);
}

::selection {
    background: var(--lime);
    color: var(--black);
}

/* Foco visible y consistente en todo el sitio */
:focus-visible {
    outline: 3px solid var(--pink-ink);
    outline-offset: 3px;
    border-radius: 2px;
}


/* =========================================================
   03 · UTILIDADES Y COMPONENTES
   ========================================================= */

.shell {
    width: var(--shell);
    margin-inline: auto;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    white-space: nowrap;
    clip-path: inset(50%);
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 100;
    padding: 12px 18px;
    background: var(--lime);
    color: var(--black);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    transform: translateY(-180%);
    transition: transform var(--base) var(--ease);
}

.skip-link:focus-visible {
    transform: translateY(0);
}


/* --- Sección y encabezado de sección --- */

.section {
    width: var(--shell);
    margin-inline: auto;
    padding-top: clamp(60px, 8vw, 110px);
}

.section-title {
    display: grid;
    grid-template-columns: auto auto 1fr;
    align-items: center;
    gap: clamp(14px, 2vw, 25px);
    margin-bottom: clamp(34px, 4.5vw, 56px);
}

.section-title .section-index {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--fg-muted);
}

.section-title h2 {
    color: var(--pink-ink);
    font-size: clamp(32px, 4.4vw, 52px);
}

.section-title .section-rule {
    height: 1px;
    background: var(--border-strong);
}


/* --- Botones --- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-width: 184px;
    min-height: 52px;
    padding: 0 22px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    transition:
        background-color var(--base) var(--ease),
        border-color var(--base) var(--ease),
        color var(--base) var(--ease),
        transform var(--base) var(--ease),
        box-shadow var(--base) var(--ease);
}

.btn .arrow {
    transition: transform var(--base) var(--ease);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.btn:hover .arrow {
    transform: translateX(6px);
}

.btn:active {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--lime);
    border-color: var(--lime);
    color: var(--black);
}

.btn-primary:hover {
    background: var(--black);
    border-color: var(--black);
    color: var(--lime);
}

.btn-secondary {
    border-color: var(--border-strong);
    color: var(--fg);
}

.btn-secondary:hover {
    background: var(--fg);
    color: var(--bg);
}


/* --- Etiqueta / chip --- */

.label {
    display: inline-block;
    padding: 7px 11px;
    background: var(--pink);
    color: var(--black);
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .1em;
}


/* --- Contenedor de imagen reservado (hero y proyectos) ---
   Mantiene el espacio aunque la imagen todavía no exista.
   main.js le agrega .is-empty si el archivo no carga.
--------------------------------------------------------- */

.media-frame {
    position: relative;
    display: block;
    overflow: hidden;
    background: var(--media-bg);
    border: 1px solid var(--border);
}

.media-frame img {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--slow) var(--ease);
}

.media-frame .media-hint {
    position: absolute;
    inset: 0;
    z-index: 0;
    display: grid;
    align-content: center;
    justify-items: center;
    gap: 10px;
    padding: 24px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .2em;
    color: var(--fg-muted);
}

.media-frame .media-hint code {
    padding: 5px 9px;
    border: 1px dashed var(--border-strong);
    border-radius: 3px;
    font-size: 11px;
    letter-spacing: .04em;
}

.media-frame.is-empty img {
    display: none;
}

/* Con JS el cartel guía sólo aparece si falta el archivo.
   Si no, se transparentaría por detrás de las imágenes
   con fondo recortado (como la del hero). */
.js .media-frame .media-hint {
    display: none;
}

.js .media-frame.is-empty .media-hint {
    display: grid;
}

/* Sobre los fondos rosa/lima el texto guía necesita más contraste */
.media-frame.tint-pink .media-hint,
.media-frame.tint-lime .media-hint {
    color: rgba(16, 16, 16, .72);
}

.media-frame.tint-pink .media-hint code,
.media-frame.tint-lime .media-hint code {
    border-color: rgba(16, 16, 16, .5);
}


/* --- Aparición al hacer scroll (sólo si hay JS) --- */

.js [data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition:
        opacity var(--slow) var(--ease),
        transform var(--slow) var(--ease);
}

.js [data-reveal].is-visible {
    opacity: 1;
    transform: none;
}


/* =========================================================
   04 · HEADER Y NAVEGACIÓN
   ========================================================= */

.header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: var(--header-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: box-shadow var(--base) var(--ease);
}

.header-inner {
    height: var(--header-h);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.header.is-scrolled {
    box-shadow: var(--shadow);
}

.logo {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    font-size: 30px;
    font-weight: 900;
    letter-spacing: -.06em;
}

.logo .logo-star {
    display: inline-block;
    color: var(--lime-ink);
    transition: transform var(--slow) var(--ease);
}

.logo:hover .logo-star {
    transform: rotate(90deg);
}


/* --- Navegación --- */

.nav ul {
    display: flex;
    gap: clamp(20px, 2.6vw, 36px);
}

.nav a {
    position: relative;
    display: inline-block;
    padding-block: 6px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.nav a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -6px;
    height: 4px;
    background: var(--lime);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--base) var(--ease);
}

.nav a:hover::after,
.nav a:focus-visible::after,
.nav a[aria-current="true"]::after {
    transform: scaleX(1);
}


/* --- Acciones del header --- */

.header-actions {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px 6px 12px;
    background: var(--invert-bg);
    color: var(--invert-fg);
    border-radius: 50px;
    transition:
        transform var(--base) var(--ease),
        background-color var(--base) var(--ease);
}

.theme-toggle:hover {
    transform: translateY(-2px);
}

.theme-toggle .theme-icon {
    font-size: 15px;
    line-height: 1;
}

.theme-toggle .theme-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--pink);
    transition:
        background-color var(--base) var(--ease),
        transform var(--base) var(--ease);
}

[data-theme="dark"] .theme-toggle .theme-dot {
    background: var(--lime);
    transform: rotate(180deg);
}


/* --- Botón de menú (mobile) --- */

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    place-items: center;
    gap: 5px;
    border: 1px solid var(--border-strong);
    border-radius: 50px;
}

.nav-toggle .bar {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--fg);
    transition:
        transform var(--base) var(--ease),
        opacity var(--fast) var(--ease);
}

.nav-toggle[aria-expanded="true"] .bar:nth-of-type(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .bar:nth-of-type(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .bar:nth-of-type(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* =========================================================
   05 · HERO
   ========================================================= */

.hero {
    width: var(--shell);
    margin-inline: auto;
    display: grid;
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: clamp(40px, 5vw, 70px);
    align-items: center;
    padding-block: clamp(48px, 7vw, 84px);
}

.hero-content {
    position: relative;
    padding-left: clamp(0px, 4vw, 55px);
}

.section-number {
    position: absolute;
    left: 0;
    top: 8px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--fg-muted);
}

.hero h1 {
    margin-top: 22px;
    font-size: clamp(56px, 7.4vw, 118px);
    line-height: .84;
    letter-spacing: -.075em;
}

.hero h1 strong {
    display: block;
    color: var(--pink-ink);
    font-weight: inherit;
}

.hero-role {
    margin-top: 32px;
    font-family: var(--font-mono);
    font-size: clamp(19px, 2.1vw, 30px);
    font-weight: 500;
    line-height: 1.35;
    letter-spacing: -.01em;
}

.hero mark {
    padding: 0 6px;
    background: var(--lime);
    color: var(--black);
}

.hero-text {
    max-width: 55ch;
    margin-top: 24px;
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.75;
    color: var(--fg-soft);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 36px;
}

/* --- Guía vertical del hero: la línea que baja desde el 01
   y termina en tres puntos --- */

.hero-rail {
    position: absolute;
    left: 7px;
    top: 42px;
    bottom: 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.hero-rail-line {
    flex: 1;
    width: 1px;
    background: linear-gradient(
        to bottom,
        var(--border-strong),
        var(--border)
    );
}

.hero-rail-dots {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.hero-rail-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--pink);
}


/* --- Composición visual del HERO ---
   Ilustración propia, no una fotografía personal.
   Archivo esperado: assets/hero-visual.jpg
------------------------------------------------ */

.hero-visual {
    position: relative;
    aspect-ratio: 1600 / 1335;
    max-height: 640px;
    background: transparent;
    border: 0;
    border-radius: 0;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* =========================================================
   06 · FRANJA RESUMEN
   ========================================================= */

.summary {
    width: var(--shell);
    margin-inline: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    padding-block: clamp(30px, 3.4vw, 44px);
    background: var(--summary-bg);
    /* Sin recuadro: sólo dos hilos que abren y cierran la franja */
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.summary-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 2px clamp(22px, 2.8vw, 38px);
    border-right: 1px solid var(--border);
}

.summary-item:last-child {
    border-right: 0;
}

/* --- Primer bloque: el número --- */

.summary-lead {
    gap: 16px;
}

.big-number {
    font-size: clamp(38px, 3.4vw, 46px);
    font-weight: 900;
    letter-spacing: -.05em;
    line-height: 1;
}

.summary-label {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .12em;
    line-height: 1.7;
    color: var(--fg-soft);
}

.summary-dash {
    width: 26px;
    height: 3px;
    background: var(--pink);
}

/* --- Icono: PNG con glifo de respaldo --- */

.summary-media {
    display: block;
    min-height: 44px;
}

.summary-icon {
    width: 44px;
    height: 44px;
    object-fit: contain;
}

.js .icon-swap {
    display: none;
}

.js .icon-swap.is-ready {
    display: block;
}

.summary-media .icon-fallback {
    font-size: 30px;
    line-height: 1.4;
}

/* --- Texto --- */

.summary-title {
    font-size: 17px;
    font-weight: 800;
    letter-spacing: -.005em;
}

.summary-item p {
    color: var(--fg-muted);
    font-size: 14px;
    line-height: 1.7;
}

.pink { color: var(--pink-ink); }
.lime { color: var(--lime-ink); }


/* =========================================================
   07 · SOBRE MÍ
   ========================================================= */

.about-grid {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: clamp(36px, 5vw, 70px);
    align-items: center;
}

.about-text p {
    max-width: 62ch;
    margin-bottom: 18px;
    padding-left: clamp(24px, 3.5vw, 55px);
    border-left: 1px solid var(--border-strong);
    font-size: clamp(15px, 1.15vw, 17px);
    line-height: 1.75;
    color: var(--fg-soft);
}

.about-text p:last-child {
    margin-bottom: 0;
}

.concept-card {
    --flow-gap: clamp(26px, 4.4vw, 58px);

    display: flex;
    flex-direction: column;
    gap: clamp(30px, 4vw, 46px);
    padding: clamp(30px, 3.6vw, 46px) clamp(28px, 3.4vw, 48px);
    background: var(--lime);
    color: var(--black);
    border-radius: 24px;
    transition:
        transform var(--base) var(--ease),
        box-shadow var(--base) var(--ease);
}

.concept-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}


/* --- Arriba: asterisco + los dos carteles --- */

.concept-top {
    display: flex;
    align-items: center;
    gap: clamp(20px, 3vw, 38px);
}

.concept-star {
    flex: 0 0 auto;
    color: var(--pink-ink);
    font-size: clamp(56px, 6vw, 84px);
    line-height: 1;
    transition: transform var(--slow) var(--ease);
}

.concept-card:hover .concept-star {
    transform: rotate(180deg);
}

.concept-claims {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.concept-claims strong {
    display: inline-block;
    padding: 11px 18px;
    background: var(--black);
    color: #fff;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: clamp(13px, 1.1vw, 15px);
    font-weight: 600;
    letter-spacing: .06em;
}


/* --- Abajo: el flujo de trabajo --- */

.concept-flow {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: var(--flow-gap);
}

.concept-step {
    position: relative;
    display: grid;
    justify-items: center;
    gap: 14px;
    min-width: 78px;
}

/* Flecha entre pasos, alineada con la fila de iconos */
.concept-step:not(:last-child)::after {
    content: "→";
    position: absolute;
    top: 8px;
    left: calc(100% + var(--flow-gap) / 2);
    transform: translateX(-50%);
    color: var(--pink-ink);
    font-size: 26px;
    line-height: 1;
}

.concept-icon {
    display: grid;
    place-items: center;
    min-height: 46px;
    color: var(--pink-ink);
    font-size: 26px;
}

.concept-icon .step-icon {
    width: 46px;
    height: 46px;
    object-fit: contain;
}

.concept-name {
    font-family: "IBM Plex Mono", monospace;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .12em;
    white-space: nowrap;
}

/* =========================================================
   08 · PROYECTOS (case studies)
   Cada proyecto es una ficha de dos columnas: a la izquierda
   el relato, a la derecha la captura general, tres capturas
   de apoyo y la ficha técnica.
   ========================================================= */

.projects-list {
    display: grid;
    gap: clamp(30px, 3.6vw, 64px);
}

.case-study {
    display: grid;
    grid-template-columns: minmax(300px, 33%) minmax(0, 67%);
    min-height: clamp(560px, 74vh, 820px);
    overflow: hidden;
    background: var(--surface-solid);
    border: 1px solid var(--border);
    border-radius: 18px;
    transition:
        border-color var(--base) var(--ease),
        box-shadow var(--base) var(--ease);
}

.case-study:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow);
}


/* --- Columna izquierda: el relato --- */

.case-info {
    display: flex;
    flex-direction: column;
    padding:
        clamp(34px, 3.4vw, 55px)
        clamp(26px, 3.2vw, 58px)
        clamp(32px, 3vw, 45px);
    border-right: 1px solid var(--border);
}

.case-index {
    display: flex;
    align-items: center;
    gap: 13px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .08em;
}

.case-accent-line {
    width: 34px;
    height: 2px;
    margin-top: 20px;
    background: var(--pink);
}

.case-content {
    margin-top: clamp(46px, 8vh, 120px);
}

.case-category {
    display: inline-block;
    padding: 7px 12px;
    background: var(--lime);
    color: var(--black);
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .06em;
}

.case-title-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-top: 25px;
}

.case-title-row h3 {
    font-size: clamp(54px, 5.6vw, 104px);
    font-weight: 900;
    line-height: .9;
    letter-spacing: -.07em;
}

.case-star {
    margin-bottom: 6px;
    color: var(--pink-ink);
    font-size: clamp(38px, 3.8vw, 58px);
    font-weight: 300;
    line-height: 1;
    transition: transform var(--slow) var(--ease);
}

.case-study:hover .case-star {
    transform: rotate(180deg);
}

.case-small-line {
    display: block;
    width: 55px;
    height: 2px;
    margin-top: 32px;
    background: var(--pink);
}

.case-intro {
    max-width: 26ch;
    margin-top: 40px;
    font-size: clamp(19px, 1.5vw, 26px);
    font-weight: 500;
    line-height: 1.45;
}

.case-description {
    max-width: 46ch;
    margin-top: 24px;
    color: var(--fg-soft);
    font-size: 15px;
    line-height: 1.75;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 40px;
}

.case-tags li {
    padding: 10px 15px;
    background: rgba(255, 255, 255, .2);
    border: 1px solid var(--border-strong);
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .03em;
}

[data-theme="dark"] .case-tags li {
    background: rgba(255, 255, 255, .04);
}

.case-footer-left {
    margin-top: auto;
    padding-top: clamp(40px, 6vh, 80px);
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--pink);
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    transition:
        gap var(--base) var(--ease),
        color var(--base) var(--ease);
}

.case-link .arrow {
    color: var(--pink-ink);
    font-size: 18px;
}

.case-link:hover {
    gap: 22px;
    color: var(--pink-ink);
}

.case-pagination {
    display: block;
    margin-top: clamp(32px, 5vh, 65px);
    color: var(--fg-muted);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .1em;
}


/* --- Columna derecha: las capturas --- */

.case-visual {
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding:
        clamp(26px, 3vw, 44px)
        clamp(18px, 2.2vw, 32px)
        clamp(24px, 2.4vw, 35px);
    border-top: 4px solid var(--pink);
}

.visual-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .06em;
}

.main-screenshot {
    width: 100%;
    aspect-ratio: 16 / 8.4;
    background: #181818;
    border: 1px solid var(--border);
    border-radius: 14px;
}

.main-screenshot img,
.gallery-image img {
    object-position: top center;
}

.main-screenshot:hover img {
    transform: scale(1.01);
}

.secondary-gallery {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin-top: 28px;
}

.gallery-label {
    display: flex;
    gap: 9px;
    margin-bottom: 12px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: .05em;
}

.gallery-label span:first-child {
    color: var(--pink-ink);
    font-weight: 700;
}

.gallery-image {
    width: 100%;
    aspect-ratio: 1.25 / 1;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 11px;
}

.gallery-item:hover .gallery-image img {
    transform: scale(1.025);
}

.gallery-image .media-hint {
    padding: 10px;
    font-size: 9px;
    letter-spacing: .06em;
}

.main-screenshot .media-hint,
.gallery-image .media-hint {
    color: rgba(16, 16, 16, .55);
}

.main-screenshot .media-hint {
    color: rgba(255, 255, 255, .6);
}

.main-screenshot .media-hint code,
.gallery-image .media-hint code {
    max-width: 100%;
    overflow-wrap: anywhere;
    border-color: currentColor;
}


/* --- Ficha técnica --- */

.case-meta {
    display: grid;
    grid-template-columns: 1fr 1fr .75fr;
    margin-top: auto;
    padding-top: clamp(26px, 3vw, 42px);
}

.meta-item {
    padding: 12px 30px;
    border-right: 1px solid var(--border);
}

.meta-item:first-child {
    padding-left: 10px;
}

.meta-item:last-child {
    border-right: 0;
}

.meta-item dt {
    margin-bottom: 11px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .08em;
}

.meta-item dd {
    color: var(--fg-soft);
    font-family: var(--font-mono);
    font-size: 10px;
    line-height: 1.5;
}


/* =========================================================
   09 · STACK
   ========================================================= */

.stack-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.stack-card {
    min-height: 160px;
    padding: 26px;
    background: var(--invert-bg);
    color: var(--invert-fg);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    transition:
        transform var(--base) var(--ease),
        border-color var(--base) var(--ease),
        box-shadow var(--base) var(--ease);
}

.stack-card:hover {
    transform: translateY(-5px);
    border-color: var(--pink);
    box-shadow: var(--shadow-lg);
}

.stack-card h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .12em;
}

.dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    transition: transform var(--base) var(--ease);
}

.stack-card:hover .dot {
    transform: scale(1.6);
}

.pink-bg { background: var(--pink); }
.lime-bg { background: var(--lime); }

.stack-card ul {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 26px;
}

.stack-card li {
    font-size: 14px;
    color: rgba(255, 255, 255, .88);
}

[data-theme="dark"] .stack-card li {
    color: var(--fg-soft);
}


/* =========================================================
   10 · CONTACTO
   ========================================================= */

.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1fr) minmax(0, .7fr);
    gap: clamp(32px, 4vw, 50px);
    align-items: center;
}

.contact-intro p {
    max-width: 40ch;
    margin-bottom: 26px;
    font-size: clamp(16px, 1.2vw, 18px);
    line-height: 1.65;
    color: var(--fg-soft);
}

.contact-data {
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding-left: clamp(22px, 3vw, 45px);
    border-left: 1px solid var(--border-strong);
}

.contact-data a,
.contact-data > span {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: .02em;
}

.contact-data a {
    align-self: flex-start;
    transition:
        color var(--base) var(--ease),
        transform var(--base) var(--ease);
}

.contact-data a:hover {
    color: var(--pink-ink);
    transform: translateX(6px);
}

.contact-data .icon {
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    border: 1px solid var(--border-strong);
    border-radius: 50%;
    font-size: 12px;
}

.contact-symbol {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.contact-symbol .symbol {
    color: var(--lime-ink);
    font-size: clamp(60px, 6vw, 84px);
    line-height: 1;
    animation: spin 26s linear infinite;
}

.contact-symbol small {
    max-width: 210px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .16em;
    color: var(--fg-muted);
}


/* =========================================================
   11 · FOOTER
   ========================================================= */

.footer {
    margin-top: clamp(60px, 8vw, 110px);
    min-height: 68px;
    padding: 18px clamp(20px, 5vw, 60px);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    background: var(--black);
    color: rgba(255, 255, 255, .82);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .08em;
}

[data-theme="dark"] .footer {
    border-top: 1px solid var(--border);
}

.footer a {
    transition: color var(--base) var(--ease);
}

.footer a:hover {
    color: var(--lime);
}


/* =========================================================
   12 · RESPONSIVE
   ========================================================= */

/* --- Desktop chico / tablet horizontal --- */
@media (max-width: 1150px) {

    .hero {
        grid-template-columns: 1fr;
        gap: 44px;
    }

    .hero-visual {
        max-height: none;
    }

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

    .stack-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .contact-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .contact-symbol {
        grid-column: 1 / -1;
    }
}


/* --- Tablet: menú desplegable y proyectos apilados --- */
@media (max-width: 900px) {

    :root {
        --header-h: 76px;
    }

    .header-inner {
        grid-template-columns: 1fr auto;
    }

    .nav-toggle {
        display: inline-grid;
    }

    .nav {
        position: absolute;
        left: 0;
        right: 0;
        top: 100%;
        background: var(--surface-solid);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
        clip-path: inset(0 0 100% 0);
        opacity: 0;
        pointer-events: none;
        transition:
            clip-path var(--base) var(--ease),
            opacity var(--fast) var(--ease);
    }

    .nav.is-open {
        clip-path: inset(0 0 0 0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav ul {
        flex-direction: column;
        gap: 0;
        padding: 6px var(--gutter) 20px;
    }

    .nav li + li {
        border-top: 1px solid var(--border);
    }

    .nav a {
        display: block;
        padding: 16px 0;
        font-size: 15px;
    }

    .nav a::after {
        bottom: 10px;
    }

    /* El case study se apila: primero el relato, después las capturas */
    .case-study {
        grid-template-columns: 1fr;
        min-height: 0;
    }

    .case-info {
        padding-bottom: 60px;
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .case-content {
        margin-top: 60px;
    }

    .case-footer-left {
        padding-top: 50px;
    }

    .case-pagination {
        margin-top: 35px;
    }

    .case-visual {
        border-top: 0;
    }
}


/* --- Mobile --- */
@media (max-width: 640px) {

    .section-number,
    .hero-rail {
        display: none;
    }

    .hero-content {
        padding-left: 0;
    }

    .hero h1 {
        font-size: clamp(46px, 13vw, 64px);
    }

    .hero-buttons .btn {
        flex: 1 1 100%;
    }

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

    .summary-item {
        padding: 20px clamp(20px, 5vw, 28px);
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .summary-item:last-child {
        border-bottom: 0;
    }

    .about-text p {
        padding-left: 20px;
    }

    .case-info {
        padding: 35px 22px 45px;
    }

    .case-content {
        margin-top: 50px;
    }

    .case-title-row {
        align-items: center;
    }

    .case-title-row h3 {
        font-size: 60px;
    }

    .case-intro {
        font-size: 20px;
    }

    .case-visual {
        padding: 28px 14px;
    }

    .main-screenshot {
        aspect-ratio: 1 / .72;
        border-radius: 10px;
    }

    /* Las tres capturas de apoyo van una debajo de otra
       para que no queden diminutas */
    .secondary-gallery {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .gallery-image {
        aspect-ratio: 16 / 10;
    }

    .case-meta {
        grid-template-columns: 1fr;
        border-top: 1px solid var(--border);
    }

    .meta-item {
        padding: 18px 0;
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .meta-item:first-child {
        padding-left: 0;
    }

    .meta-item:last-child {
        border-bottom: 0;
    }

    /* En mobile el flujo pasa a dos columnas y sin flechas */
    .concept-flow {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 26px 16px;
    }

    .concept-step:not(:last-child)::after {
        display: none;
    }

    .concept-top {
        gap: 18px;
    }

    .stack-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-data {
        padding-left: 20px;
    }

    .footer {
        flex-direction: column;
        padding-block: 24px;
        text-align: center;
    }

}


/* =========================================================
   13 · PREFERENCIAS DE MOVIMIENTO
   ========================================================= */

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

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }

    .js [data-reveal] {
        opacity: 1;
        transform: none;
    }
}