/* ============================================================
   Dr. Alan Gómez Forero — hoja de estilos
   Sin frameworks. Tokens en :root, tema claro/oscuro con override.
   ============================================================ */

/* ---------- Tokens: tema claro (base) ---------- */
:root {
    --paper: #fbfaf7;
    --paper-raised: #ffffff;
    --paper-sunken: #f3f1ec;
    --ink: #16150f;
    --ink-soft: #43413a;
    --ink-muted: #6f6c62;
    --rule: #e0ddd4;
    --rule-strong: #c9c5b9;
    --accent: #a8442a;
    --accent-hover: #8c3721;
    --accent-wash: #f6ebe6;
    --shadow: 0 1px 2px rgba(22, 21, 15, .05), 0 8px 24px -12px rgba(22, 21, 15, .12);

    /* Árbol familiar: el lenguaje canónico es blanco y negro */
    --ped-line: #43413a;
    --ped-fill: #16150f;
    --ped-empty: #ffffff;
    --ped-dim: #c9c5b9;

    --font-display: "Fraunces", Georgia, "Times New Roman", serif;
    --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

    --measure: 68ch;
    --gutter: clamp(1.25rem, 5vw, 3rem);
}

/* ---------- Tokens: tema oscuro por preferencia del sistema ---------- */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --paper: #14140f;
        --paper-raised: #1d1c16;
        --paper-sunken: #100f0b;
        --ink: #f2efe6;
        --ink-soft: #cbc7bb;
        --ink-muted: #918d80;
        --rule: #33322a;
        --rule-strong: #4a483d;
        --accent: #e08b6f;
        --accent-hover: #eda183;
        --accent-wash: #2a1f19;
        --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .6);

        --ped-line: #cbc7bb;
        --ped-fill: #f2efe6;
        --ped-empty: #14140f;
        --ped-dim: #4a483d;
    }
}

/* ---------- Tokens: tema oscuro por elección explícita ---------- */
:root[data-theme="dark"] {
    --paper: #14140f;
    --paper-raised: #1d1c16;
    --paper-sunken: #100f0b;
    --ink: #f2efe6;
    --ink-soft: #cbc7bb;
    --ink-muted: #918d80;
    --rule: #33322a;
    --rule-strong: #4a483d;
    --accent: #e08b6f;
    --accent-hover: #eda183;
    --accent-wash: #2a1f19;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .6);

    --ped-line: #cbc7bb;
    --ped-fill: #f2efe6;
    --ped-empty: #14140f;
    --ped-dim: #4a483d;
}

/* ---------- Reset acotado ---------- */
*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.12;
    letter-spacing: -.02em;
    margin: 0;
    text-wrap: balance;
}

p { margin: 0 0 1.15em; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: var(--accent-hover); }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 2px;
}

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
}

/* ---------- Layout ---------- */
.wrap {
    width: 100%;
    max-width: 62rem;
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.wrap--narrow { max-width: 46rem; }

.section { padding-block: clamp(4rem, 10vw, 7rem); }
.section + .section { border-top: 1px solid var(--rule); }

.section__label {
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin: 0 0 .85rem;
}

.section__title {
    font-size: clamp(1.75rem, 4vw, 2.4rem);
    margin-bottom: 1.5rem;
}

.lead {
    font-size: 1.15rem;
    color: var(--ink-soft);
    max-width: var(--measure);
}

/* ---------- Navegación ---------- */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--rule);
}

.nav__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 4rem;
}

.nav__brand {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -.01em;
    color: var(--ink);
    text-decoration: none;
}

.nav__right { display: flex; align-items: center; gap: .35rem; }

.nav__links { display: flex; align-items: center; gap: 1.75rem; }

.nav__links a {
    color: var(--ink-soft);
    text-decoration: none;
    font-size: .9rem;
    font-weight: 500;
}

.nav__links a:hover { color: var(--accent); }

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid transparent;
    border-radius: .5rem;
    background: transparent;
    color: var(--ink-soft);
    cursor: pointer;
    transition: background .15s ease, color .15s ease;
}

.icon-btn:hover { background: var(--paper-sunken); color: var(--ink); }
.icon-btn svg { width: 1.15rem; height: 1.15rem; }

/* El icono del toggle depende del tema activo */
.icon-sun { display: none; }
.icon-moon { display: block; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .icon-sun { display: block; }
    :root:not([data-theme="light"]) .icon-moon { display: none; }
}

:root[data-theme="dark"] .icon-sun { display: block; }
:root[data-theme="dark"] .icon-moon { display: none; }
:root[data-theme="light"] .icon-sun { display: none; }
:root[data-theme="light"] .icon-moon { display: block; }

.nav__toggle { display: none; }

.nav__mobile {
    display: none;
    border-top: 1px solid var(--rule);
    padding-block: .5rem 1rem;
}

.nav__mobile.is-open { display: block; }

.nav__mobile a {
    display: block;
    padding: .7rem .25rem;
    color: var(--ink-soft);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid var(--rule);
}

.nav__mobile a:last-child { border-bottom: 0; }

@media (max-width: 46rem) {
    .nav__links { display: none; }
    .nav__toggle { display: inline-flex; }
}

/* ---------- Hero ---------- */
.hero { padding-block: clamp(3.5rem, 9vw, 6.5rem); }

.hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
}

.hero h1 {
    font-size: clamp(2.25rem, 6vw, 3.6rem);
    margin-bottom: 1.25rem;
}

.hero__sub {
    font-size: 1.15rem;
    color: var(--ink-soft);
    max-width: 34ch;
    margin-bottom: 1.75rem;
}

.hero__portrait {
    width: clamp(9rem, 20vw, 13rem);
    aspect-ratio: 1;
    object-fit: cover;
    /* la foto es vertical: el recorte se corre hacia arriba para no comer la cabeza */
    object-position: center 32%;
    border-radius: 50%;
    border: 1px solid var(--rule-strong);
    filter: grayscale(1);
    transition: filter .5s ease;
}

.hero__portrait:hover { filter: grayscale(0); }

@media (max-width: 46rem) {
    .hero__grid { grid-template-columns: 1fr; }
    .hero__portrait { order: -1; width: 7.5rem; }
    .hero__sub { max-width: none; }
}

.btn-row { display: flex; flex-wrap: wrap; gap: .75rem; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .7rem 1.35rem;
    border-radius: .5rem;
    font-size: .95rem;
    font-weight: 550;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background .15s ease, border-color .15s ease, color .15s ease;
}

.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-hover); color: #fff; }

.btn--ghost { border-color: var(--rule-strong); color: var(--ink); background: transparent; }
.btn--ghost:hover { background: var(--paper-sunken); color: var(--ink); border-color: var(--ink-muted); }

.btn[disabled] { opacity: .38; cursor: not-allowed; }

/* ---------- Caso interactivo ---------- */
.case { background: var(--paper-sunken); }

.case__intro { max-width: var(--measure); margin-bottom: 2.5rem; }

.case__thesis {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2.6vw, 1.5rem);
    line-height: 1.4;
    color: var(--ink);
    border-left: 2px solid var(--accent);
    padding-left: 1.25rem;
    margin-bottom: 1.5rem;
}

.case__board {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 2.75rem);
    align-items: start;
}

@media (max-width: 56rem) {
    .case__board { grid-template-columns: 1fr; }
}

.case__stage {
    background: var(--paper-raised);
    border: 1px solid var(--rule);
    border-radius: .85rem;
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

/* El aspecto se fija acá y el JS encuadra el viewBox para que coincida:
   así la caja no cambia de alto entre pasos. En pantallas muy angostas
   scrollea antes que encogerse hasta ser ilegible. */
.case__svg-scroll { overflow-x: auto; }

.case__svg-scroll svg {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 800 / 470;
    min-width: 28rem;
}

.case__panel { display: flex; flex-direction: column; gap: 1.25rem; }

.case__progress {
    display: flex;
    gap: .3rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.case__progress li {
    height: 3px;
    flex: 1;
    background: var(--rule-strong);
    border-radius: 2px;
    transition: background .3s ease;
}

.case__progress li.is-done { background: var(--accent); }

.case__step-n {
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.case__step-title {
    font-size: 1.35rem;
    margin: .4rem 0 .75rem;
}

.case__body { color: var(--ink-soft); }
.case__body strong { color: var(--ink); font-weight: 600; }

.case__hypothesis {
    background: var(--accent-wash);
    border-radius: .6rem;
    padding: .9rem 1.1rem;
    font-size: .95rem;
}

.case__hypothesis span {
    display: block;
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: .3rem;
}

.case__nav { display: flex; gap: .6rem; align-items: center; }
.case__count { margin-left: auto; font-size: .85rem; color: var(--ink-muted); }

/* Leyenda de símbolos */
.legend {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem 1.25rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--rule);
    font-size: .78rem;
    color: var(--ink-muted);
    list-style: none;
}

.legend li { display: flex; align-items: center; gap: .4rem; }
.legend svg { width: 15px; height: 15px; flex-shrink: 0; }

/* --- Elementos del árbol familiar --- */
.ped-line {
    stroke: var(--ped-line);
    stroke-width: 1.6;
    fill: none;
}

.ped-node .sym {
    stroke: var(--ped-line);
    stroke-width: 1.6;
    fill: var(--ped-empty);
}

.ped-node.is-affected .sym { fill: var(--ped-fill); }

.ped-node .label {
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 500;
    fill: var(--ink-muted);
    text-anchor: middle;
}

.ped-node.is-proband .label { fill: var(--accent); font-weight: 650; }

.ped-deceased { stroke: var(--ped-line); stroke-width: 1.6; }
.ped-carrier { fill: var(--ped-line); }
.ped-proband-arrow { stroke: var(--accent); stroke-width: 1.8; fill: none; }
.ped-proband-arrow-head { fill: var(--accent); }

/* Aparición progresiva */
.ped-node, .ped-line, .ped-carrier, .ped-proband-arrow, .ped-proband-arrow-head {
    opacity: 0;
    transition: opacity .45s ease;
}

.ped-node.is-visible,
.ped-line.is-visible,
.ped-carrier.is-visible,
.ped-proband-arrow.is-visible,
.ped-proband-arrow-head.is-visible { opacity: 1; }

/* Atenuar lo que no está en foco en el paso actual */
.ped-node.is-visible.is-dimmed { opacity: .3; }

.ped-highlight {
    fill: none;
    stroke: var(--accent);
    stroke-width: 2;
    opacity: 0;
    transition: opacity .45s ease;
}

.ped-highlight.is-visible { opacity: 1; }

/* ---------- Tarjetas de desarrollo ---------- */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
    gap: 1.25rem;
}

.card {
    background: var(--paper-raised);
    border: 1px solid var(--rule);
    border-radius: .85rem;
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: .75rem;
}

.card h3 { font-size: 1.2rem; }

.card p { font-size: .95rem; color: var(--ink-soft); margin: 0; }

.card__stack {
    margin-top: auto;
    padding-top: .5rem;
    font-size: .78rem;
    color: var(--ink-muted);
    font-variant-numeric: tabular-nums;
}

.note {
    margin-top: 1.75rem;
    font-size: .88rem;
    color: var(--ink-muted);
    max-width: var(--measure);
}

/* ---------- Trayectoria ---------- */
.cv { display: flex; flex-direction: column; gap: 2.5rem; }

.cv__item {
    display: grid;
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 1.5rem;
}

@media (max-width: 40rem) {
    .cv__item { grid-template-columns: 1fr; gap: .35rem; }
}

.cv__when {
    font-size: .85rem;
    font-weight: 600;
    color: var(--ink-muted);
    font-variant-numeric: tabular-nums;
    padding-top: .15rem;
}

.cv__what h3 { font-size: 1.15rem; margin-bottom: .2rem; }

.cv__where {
    font-size: .95rem;
    color: var(--accent);
    margin-bottom: .5rem;
}

.cv__what p { font-size: .95rem; color: var(--ink-soft); margin: 0; }

/* ---------- Perfil ---------- */
.profile {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 3.5rem);
    align-items: start;
}

@media (max-width: 46rem) {
    .profile { grid-template-columns: 1fr; }
}

.facts {
    list-style: none;
    margin: 0;
    padding: 1.5rem;
    background: var(--paper-raised);
    border: 1px solid var(--rule);
    border-radius: .85rem;
    font-size: .9rem;
}

.facts li {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding-block: .55rem;
    border-bottom: 1px solid var(--rule);
}

.facts li:last-child { border-bottom: 0; padding-bottom: 0; }
.facts dt, .facts .k { color: var(--ink-muted); }
.facts .v { font-weight: 600; text-align: right; }

/* ---------- Contacto ---------- */
.contact { background: var(--paper-sunken); }

.contact__mail {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4.5vw, 2.4rem);
    color: var(--ink);
    text-decoration: none;
    border-bottom: 2px solid var(--accent);
    padding-bottom: .15rem;
    overflow-wrap: anywhere;
}

.contact__mail:hover { color: var(--accent); }

.foot {
    padding-block: 2.5rem;
    border-top: 1px solid var(--rule);
    font-size: .82rem;
    color: var(--ink-muted);
    display: flex;
    flex-wrap: wrap;
    gap: .75rem 1.5rem;
    justify-content: space-between;
}

.foot a { color: var(--ink-muted); }
.foot a:hover { color: var(--accent); }

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    left: .5rem;
    top: -3rem;
    z-index: 100;
    background: var(--accent);
    color: #fff;
    padding: .55rem 1rem;
    border-radius: .4rem;
    text-decoration: none;
    transition: top .15s ease;
}

.skip-link:focus { top: .5rem; color: #fff; }