/*
  Brújula Systems — landing v0.1 (placeholder Fase 1-2 hasta Next.js Fase 3).
  Paleta v3 doc maestro "ink-on-paper":
  - papel crema      #EDE6D8
  - tinta grafito    #2C2C2C
  - acento terracota #C97D63
  - gris medio       #6F6A60
  - papel sombra     #DCD3C0
*/

@import url("https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,300;12..96,400;12..96,500;12..96,600;12..96,700&display=swap");

:root {
    /* Paleta dashboard dark — del artifact que pidió el jefe.
       Trading-terminal vibe: dark blue-black + glassmorphism + 4 acentos. */
    --bg: #060B14;
    --bg-2: #0A1322;
    --paper: #060B14;                     /* alias para compat */
    --paper-card: rgba(14, 24, 42, 0.66); /* glass panel */
    --paper-shadow: rgba(120, 170, 240, 0.12);
    --panel: rgba(14, 24, 42, 0.66);
    --panel-2: rgba(18, 30, 52, 0.5);
    --hair: rgba(120, 170, 240, 0.12);
    --hair-2: rgba(120, 170, 240, 0.22);

    --fg: #EAF1FB;
    --ink: #EAF1FB;                        /* alias para compat */
    --fg-dim: rgba(234, 241, 251, 0.56);
    --ink-soft: rgba(234, 241, 251, 0.56); /* alias */
    --fg-faint: rgba(234, 241, 251, 0.32);
    --ink-muted: rgba(234, 241, 251, 0.32);

    --blue: #3B82F6;        /* evidencia */
    --blue-bright: #5BA3FF;
    --cyan: #34E0D0;        /* sub-tesis · UP */
    --gold: #F2B340;        /* tesis maestra */
    --gold-bright: #FFC95C;
    --up: #34E0D0;
    --down: #FF6B8A;

    /* Aliases viejos remapeados al nuevo lenguaje */
    --terracotta: var(--cyan);
    --terracotta-dark: var(--blue-bright);
    --teal: var(--cyan);
    --teal-soft: var(--blue);

    --max-width: 1480px;
    --gutter: clamp(1.25rem, 4vw, 2.5rem);

    --serif: "Bricolage Grotesque", system-ui, sans-serif;
    --sans: "Bricolage Grotesque", system-ui, -apple-system, sans-serif;
    --mono: "JetBrains Mono", "SF Mono", Consolas, monospace;

    --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    position: relative;
}

/* Ambient radial gradients — del artifact, sutil pero da profundidad */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(50% 40% at 50% 42%, rgba(59, 130, 246, 0.10), transparent 70%),
        radial-gradient(40% 40% at 85% 60%, rgba(242, 179, 64, 0.06), transparent 70%),
        radial-gradient(40% 40% at 10% 30%, rgba(52, 224, 208, 0.06), transparent 70%);
}

main, header, footer { position: relative; z-index: 1; }

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

.wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
}

/* ============== Header ============== */

.site-header {
    padding: 1.25rem 0;
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(6, 11, 20, 0.7);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--hair);
}

.site-header .wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--sans);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--fg);
    text-decoration: none;
}

/* Logo del header — desde 2026-06-19 usamos imagen oficial del compass
   (gradient cyan/azul/violeta con dots de colores). Cambio del glyph
   unicode '⌖' a marca real.

   Mantenemos .compass como nombre de clase para no romper backward
   compat con los HTMLs ya escritos. El texto que estaba dentro del
   <span class="compass"> ahora se oculta (color transparent) y el
   compass se rendera como background-image. */
.compass {
    display: inline-block;
    width: 1.85rem;
    height: 1.85rem;
    background-image: url("/assets/branding/logo-mark.png");
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    color: transparent;
    font-size: 0;
    line-height: 1;
    vertical-align: middle;
    flex-shrink: 0;
}

/* Variante mas grande disponible para el footer o hero si se necesita. */
.brand-logo {
    display: inline-block;
    height: 1.85rem;
    width: auto;
    vertical-align: middle;
}

.brand-name { color: var(--fg); }

.meta {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--fg-dim);
}

/* Livebadge cyan blink — del artifact */
.status-tag {
    padding: 0.4rem 0.8rem;
    border: 1px solid rgba(52, 224, 208, 0.3);
    color: var(--cyan);
    border-radius: 100px;
    background: rgba(52, 224, 208, 0.1);
    font-family: var(--mono);
    font-size: 0.72rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    letter-spacing: 0.05em;
}

.status-tag::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 10px var(--cyan);
    display: inline-block;
    animation: live-blink 1.5s ease-in-out infinite;
}

@keyframes live-blink {
    50% { opacity: 0.25; }
}

.status-tag {
    padding: 0.35rem 0.75rem;
    border: none;
    color: var(--teal);
    border-radius: 100px;
    background: transparent;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.status-tag::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--teal);
    display: inline-block;
    animation: status-pulse 2.4s ease-in-out infinite;
}

@keyframes status-pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

/* Toggle de idioma ES/EN */
.lang-toggle {
    font-family: var(--mono);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    padding: 0.35rem 0.6rem;
    border: 1px solid var(--paper-shadow);
    border-radius: 0.2rem;
    background: var(--paper);
    color: var(--fg-dim);
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease;
    line-height: 1;
}

.lang-toggle:hover {
    border-color: var(--terracotta);
    color: var(--cyan);
}

/* En el header con nav-links, alinear el toggle con los links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.nav-links .lang-toggle {
    margin-left: 0.25rem;
}

/* El header de la landing tiene .meta sin nav-links; espaciar igual */
.site-header .meta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-link {
    color: var(--fg-dim);
    text-decoration: none;
    font-family: var(--mono);
    font-size: 0.82rem;
    transition: color 0.15s ease;
}

.nav-link:hover { color: var(--cyan); }
.nav-link-active { color: var(--fg); font-weight: 500; }

/* ============== Hero ============== */

.hero {
    padding: clamp(4rem, 12vw, 9rem) 0 clamp(3rem, 7vw, 6rem) 0;
    position: relative;
}

/* Ornamento sutil del símbolo brújula como background del hero */
.hero::before {
    content: "⌖";
    position: absolute;
    font-size: clamp(15rem, 30vw, 28rem);
    color: var(--cyan);
    opacity: 0.04;
    top: 50%;
    right: -3rem;
    transform: translateY(-50%);
    line-height: 1;
    pointer-events: none;
    user-select: none;
    font-family: serif;
}

.hero .wrap { position: relative; z-index: 1; }

.hero h1 {
    font-family: var(--sans);
    font-weight: 300;
    font-size: clamp(2.4rem, 6.5vw, 5rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
    max-width: 18ch;
    margin: 0 0 1.75rem 0;
    color: var(--fg);
}

.hero h1 em {
    color: var(--cyan);
    font-style: normal;
    font-weight: 400;
}

.lede {
    font-family: var(--sans);
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    line-height: 1.55;
    color: var(--fg-dim);
    font-style: normal;
    font-weight: 300;
    max-width: 42ch;
    margin: 0;
}

/* ============== CTAs reutilizables — estilo refinado ============== */

.hero-cta {
    margin-top: 2.5rem;
    display: flex;
    gap: 0.85rem;
    flex-wrap: wrap;
}

.cta-primary,
.cta-secondary {
    display: inline-flex;
    align-items: center;
    padding: 0.95rem 1.85rem;
    border-radius: 100px;          /* pill — más Apple */
    font-family: var(--sans);
    font-size: 0.98rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s var(--ease-out);
    line-height: 1.2;
    letter-spacing: -0.005em;
}

.cta-primary {
    background: var(--cyan);
    color: #000;
    border: 1px solid var(--cyan);
    box-shadow: 0 0 24px rgba(52, 224, 208, 0.25);
}

.cta-primary:hover {
    background: var(--gold);
    border-color: var(--gold);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(242, 179, 64, 0.35);
}

.cta-secondary {
    background: rgba(120, 170, 240, 0.07);
    color: var(--fg);
    border: 1px solid var(--hair);
    backdrop-filter: blur(10px);
}

.cta-secondary:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    transform: translateY(-2px);
}

/* ============== ¿Cómo funciona? — infografía 4 pasos (refinada) ============== */

.howto {
    padding: clamp(4rem, 9vw, 7rem) 0;
    /* sin border-top — separador via espaciado, no línea genérica */
}

.howto h2 {
    font-family: var(--serif);
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 400;
    color: var(--fg);
    letter-spacing: -0.025em;
    line-height: 1.1;
    margin: 0 0 0.85rem 0;
    max-width: 18ch;
}

.howto .lede {
    margin: 0 0 4rem 0;
    max-width: 50ch;
}

.howto-steps {
    list-style: none;
    padding: 0;
    margin: 0 0 3rem 0;
    display: grid;
    gap: 2.5rem 3rem;
    grid-template-columns: 1fr;
}

@media (min-width: 760px) {
    .howto-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1080px) {
    .howto-steps {
        grid-template-columns: repeat(4, 1fr);
        gap: 2rem;
    }
}

.howto-step {
    background: transparent;        /* sin background — más limpio */
    border: none;                    /* sin border genérico */
    padding: 0;
    position: relative;
    /* separador izquierdo sutil: una línea fina del color del acento */
    padding-left: 1.25rem;
    border-left: 2px solid var(--paper-shadow);
    transition: border-color 0.4s var(--ease-out);
}

.howto-step:hover {
    border-left-color: var(--terracotta);
}

@media (min-width: 1080px) {
    .howto-step {
        padding-left: 0;
        padding-top: 1rem;
        border-left: none;
        border-top: 2px solid var(--paper-shadow);
    }
    .howto-step:hover {
        border-top-color: var(--terracotta);
        border-left-color: transparent;
    }
}

.howto-num {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--ink-muted);
    letter-spacing: 0.12em;
    display: block;
    margin-bottom: 1.25rem;
    font-weight: 500;
}

.howto-step h3 {
    font-family: var(--serif);
    font-size: 1.35rem;
    font-weight: 500;
    color: var(--fg);
    margin: 0 0 1.5rem 0;
    letter-spacing: -0.015em;
    line-height: 1.2;
}

/* Stats GIGANTES — protagonistas del bloque */
.howto-stat {
    margin: 0 0 1.25rem 0;
    line-height: 0.95;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.howto-stat-num {
    font-family: var(--sans);
    font-size: clamp(3.5rem, 6vw, 5rem);
    font-weight: 300;
    color: var(--cyan);
    letter-spacing: -0.04em;
    margin: 0;
    line-height: 0.9;
}

.howto-stat span:last-child {
    font-family: var(--sans);
    font-size: 0.85rem;
    color: var(--fg-dim);
    letter-spacing: -0.005em;
    line-height: 1.3;
}

.howto-step > p:not(.howto-stat) {
    font-size: 0.95rem;
    color: var(--fg-dim);
    line-height: 1.6;
    margin: 0;
    max-width: 32ch;
}

.howto-cta {
    display: flex;
    gap: 0.85rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 1.5rem;
}

/* ============== Qué rastreamos — sección dedicada ============== */

.domains-section {
    padding: clamp(2rem, 5vw, 3.5rem) 0;
    border-top: 1px solid var(--paper-shadow);
}

.domains-section h2 {
    font-family: var(--serif);
    font-size: clamp(1.4rem, 2.8vw, 1.85rem);
    margin: 0 0 0.6rem 0;
    color: var(--fg);
    letter-spacing: -0.01em;
}

.domains-section .lede {
    margin: 0 0 2rem 0;
    max-width: 55ch;
    font-size: 1.05rem;
}

.domains-section .domains {
    display: grid;
    gap: 0.5rem;
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .domains-section .domains {
        grid-template-columns: repeat(2, 1fr);
        column-gap: 2rem;
    }
}

.two-col {
    display: grid;
    gap: clamp(2rem, 5vw, 4rem);
    grid-template-columns: 1fr;
}

@media (min-width: 760px) {
    .two-col {
        grid-template-columns: 1fr 1.3fr;
    }
}

.col h2 {
    font-family: var(--serif);
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 1.25rem 0;
    color: var(--fg);
    letter-spacing: -0.01em;
}

.col p {
    margin: 0 0 1rem 0;
    max-width: 60ch;
}

.domains {
    list-style: none;
    padding: 0;
    margin: 0;
    font-family: var(--sans);
}

.domains li {
    padding: 0.55rem 0;
    border-top: 1px dashed var(--paper-shadow);
    font-size: 1rem;
    color: var(--fg);
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.domains li:first-child { border-top: none; }

.domains .num {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--cyan);
    font-weight: 500;
    min-width: 2ch;
}

/* ============== Construyendo en público (transparency) ============== */

.transparency {
    padding: clamp(4rem, 8vw, 6.5rem) 0;
    background: transparent;            /* sin fondo gris genérico */
}

.transparency h2 {
    font-family: var(--serif);
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin: 0 0 0.75rem 0;
    color: var(--fg);
    letter-spacing: -0.01em;
}

.transparency .lede {
    margin: 0 0 2.5rem 0;
    max-width: 50ch;
}

.trans-grid {
    display: grid;
    gap: 1.75rem;
    grid-template-columns: 1fr;
}

@media (min-width: 860px) {
    .trans-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.trans-block {
    background: var(--panel);
    border: 1px solid var(--hair);
    border-radius: 16px;
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: transform 0.35s var(--ease-out), border-color 0.35s var(--ease-out);
}

.trans-block:hover {
    transform: translateY(-3px);
    border-color: var(--hair-2);
}

.trans-block h3 {
    font-family: var(--serif);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0 0 0.85rem 0;
    color: var(--fg);
    letter-spacing: -0.005em;
}

.trans-sub {
    font-size: 0.95rem;
    color: var(--fg-dim);
    margin: 0 0 1.25rem 0;
    line-height: 1.55;
}

/* Bloque 1: chips de fuentes */
.trans-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0 0 1.25rem 0;
}

.trans-chip {
    font-family: var(--mono);
    font-size: 0.74rem;
    padding: 0.35rem 0.6rem;
    background: var(--hair);
    color: var(--fg);
    border-radius: 0.25rem;
    letter-spacing: 0.02em;
}

.trans-foot {
    font-size: 0.85rem;
    color: var(--fg-dim);
    font-style: italic;
    font-family: var(--serif);
    margin: auto 0 0 0;
    padding-top: 1rem;
    line-height: 1.55;
}

/* Bloque 2: número grande + maestras */
.trans-bignum {
    margin: 0 0 0.5rem 0;
    line-height: 1;
}

.trans-bignum-num {
    font-family: var(--serif);
    font-size: 3rem;
    font-weight: 600;
    color: var(--cyan);
    letter-spacing: -0.02em;
}

.trans-bignum-lbl {
    font-family: var(--sans);
    font-size: 0.95rem;
    color: var(--fg-dim);
    margin-left: 0.5rem;
}

.trans-masters {
    list-style: none;
    padding: 0;
    margin: 0.75rem 0 1.25rem 0;
    font-size: 0.92rem;
}

.trans-masters li {
    padding: 0.4rem 0;
    border-top: 1px dashed var(--paper-shadow);
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    line-height: 1.4;
}

.trans-masters li:first-child { border-top: none; }

.trans-mcode {
    font-family: var(--mono);
    font-size: 0.74rem;
    color: var(--cyan);
    min-width: 3.2ch;
}

.trans-cta {
    margin: auto 0 0 0;
    padding-top: 1rem;
    font-family: var(--mono);
    font-size: 0.82rem;
}

.trans-cta a {
    color: var(--cyan);
    text-decoration: none;
    border-bottom: 1px solid var(--terracotta);
    padding-bottom: 1px;
    transition: color 0.15s ease;
}

.trans-cta a:hover { color: var(--fg); }

/* Bloque 3: lista de en-desarrollo con tag */
.trans-build-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem 0;
}

.trans-build-list li {
    padding: 0.7rem 0;
    border-top: 1px dashed var(--paper-shadow);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.92rem;
    line-height: 1.5;
}

.trans-build-list li:first-child { border-top: none; }

.trans-build-tag {
    display: inline-block;
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--cyan);
    background: rgba(201, 125, 99, 0.08);
    padding: 0.2rem 0.45rem;
    border-radius: 0.2rem;
    align-self: flex-start;
}

/* ============== Las fuentes en detalle ============== */

.sources-detail {
    padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(4rem, 8vw, 6.5rem) 0;
    background: transparent;
}

.sources-detail h2 {
    font-family: var(--serif);
    font-size: clamp(1.4rem, 2.8vw, 1.85rem);
    margin: 0 0 0.6rem 0;
    color: var(--fg);
    letter-spacing: -0.01em;
}

.sources-detail .lede {
    margin: 0 0 2rem 0;
    max-width: 55ch;
    font-size: 1.05rem;
}

.src-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

@media (min-width: 720px) {
    .src-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1080px) {
    .src-grid { grid-template-columns: repeat(3, 1fr); }
}

.src-card {
    background: var(--panel);
    border: 1px solid var(--hair);
    border-radius: 16px;
    padding: 1.75rem 1.5rem 1.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: transform 0.35s var(--ease-out), border-color 0.35s var(--ease-out);
}

.src-card:hover {
    transform: translateY(-3px);
    border-color: var(--cyan);
}

.src-card h4 {
    font-family: var(--sans);
    font-size: 1.05rem;
    font-weight: 500;
    margin: 0;
    color: var(--fg);
    letter-spacing: -0.01em;
}

.src-tag {
    display: inline-block;
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--teal);
    background: transparent;
    padding: 0;
    border-radius: 0;
    align-self: flex-start;
    font-weight: 500;
}

.src-card p {
    font-size: 0.92rem;
    color: var(--fg-dim);
    line-height: 1.55;
    margin: 0;
}

.src-card p em {
    font-style: italic;
    color: var(--fg-dim);
}

/* ============== Tiers ============== */

.tiers {
    padding: clamp(4rem, 8vw, 6.5rem) 0;
    background: var(--bg-2);
    border-top: 1px solid var(--hair);
    border-bottom: 1px solid var(--hair);
    color: var(--fg);
}

.tiers h2 { color: var(--fg); }

.tiers h2 {
    font-family: var(--serif);
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin: 0 0 2rem 0;
    color: var(--fg);
    letter-spacing: -0.01em;
}

.tier-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr;
}

@media (min-width: 760px) {
    .tier-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.tier {
    background: var(--panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 2rem 1.75rem;
    border: 1px solid var(--hair);
    border-radius: 16px;
    transition: transform 0.35s var(--ease-out), border-color 0.35s var(--ease-out);
}

.tier:hover {
    transform: translateY(-4px);
    border-color: var(--cyan);
}

.tier h3 {
    color: var(--fg);
    font-weight: 500;
}

.tier .price {
    color: var(--gold);
    font-family: var(--mono);
    font-size: 0.85rem;
}

.tier ul {
    color: var(--fg-dim);
}

.tier li::before {
    color: var(--cyan);
}

.tier h3 {
    font-family: var(--serif);
    font-size: 1.35rem;
    margin: 0 0 0.35rem 0;
    color: var(--fg);
    font-weight: 600;
}

.tier .price {
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--cyan);
    margin: 0 0 1rem 0;
}

.tier ul {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.95rem;
    color: var(--fg);
}

.tier li {
    padding-left: 1rem;
    position: relative;
    margin: 0.5rem 0;
    line-height: 1.4;
}

.tier li::before {
    content: "›";
    position: absolute;
    left: 0;
    color: var(--terracotta);
}

/* ============== Signup ============== */

.signup {
    padding: clamp(3rem, 6vw, 5rem) 0;
    text-align: center;
}

.signup-inner {
    max-width: 600px;
}

.signup h2 {
    font-family: var(--serif);
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin: 0 0 1rem 0;
    color: var(--fg);
    letter-spacing: -0.01em;
}

.signup p {
    color: var(--fg-dim);
    max-width: 50ch;
    margin: 0 auto 1.75rem auto;
}

.cta {
    display: inline-block;
    padding: 0.85rem 1.75rem;
    background: var(--terracotta);
    color: var(--paper);
    border: none;
    border-radius: 0.3rem;
    text-decoration: none;
    font-weight: 500;
    font-family: var(--sans);
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.15s ease;
}

.cta:hover:not(:disabled) { background: var(--terracotta-dark); }
.cta:disabled { opacity: 0.6; cursor: wait; }

/* ============== Subscribe form ============== */

.subscribe-form {
    display: flex;
    gap: 0.5rem;
    max-width: 500px;
    margin: 0 auto;
    flex-wrap: wrap;
    justify-content: center;
}

.subscribe-form input[type="email"] {
    flex: 1 1 280px;
    padding: 0.85rem 1rem;
    border: 1px solid var(--paper-shadow);
    border-radius: 0.3rem;
    background: var(--paper);
    color: var(--fg);
    font-family: var(--sans);
    font-size: 1rem;
    transition: border-color 0.15s ease;
}

.subscribe-form input[type="email"]:focus {
    outline: none;
    border-color: var(--terracotta);
    background: #fff;
}

.subscribe-form input[type="email"]::placeholder {
    color: var(--fg-dim);
    font-style: italic;
}

/* Honeypot — invisible para humanos. */
.subscribe-form .hp {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    opacity: 0;
}

.form-message {
    margin-top: 1rem;
    min-height: 1.5rem;
    font-size: 0.92rem;
    color: var(--fg-dim);
}

.form-message-success {
    color: var(--cyan);
    font-weight: 500;
}

.form-message-error {
    color: #b04848;
}

/* ============== Theory ============== */

.theory {
    padding: clamp(3rem, 6vw, 5rem) 0;
    border-top: 1px solid var(--paper-shadow);
}

.theory h2 {
    font-family: var(--serif);
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin: 0 0 1.5rem 0;
    color: var(--fg);
    letter-spacing: -0.01em;
}

.theory p {
    max-width: 60ch;
    margin: 0 0 1.25rem 0;
}

.theory .quiet {
    color: var(--fg-dim);
    font-style: italic;
    font-family: var(--serif);
}

.theory em {
    font-style: italic;
    color: var(--cyan);
}

/* ============== Footer ============== */

.site-footer {
    padding: 2rem 0;
    border-top: 1px solid var(--paper-shadow);
    font-size: 0.85rem;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--fg-dim);
    font-family: var(--serif);
}

.footer-meta {
    color: var(--fg-dim);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--mono);
    font-size: 0.78rem;
}

.footer-meta .dot { color: var(--paper-shadow); }

.footer-meta a {
    color: var(--cyan);
    text-decoration: none;
}

.footer-meta a:hover { text-decoration: underline; }

/* ============== Selección de texto ============== */

::selection {
    background: rgba(201, 125, 99, 0.3);
    color: var(--fg);
}


/* ============================================================================
   Knowledge graph 3D del sistema Brújula.
   Container donde 3d-force-graph monta el WebGL canvas con Three.js.
   La lógica vive en /brujula-3d-graph.js.
   ============================================================================ */

/* Título destacado encima del grafo 3D — encuadra la visualización */
.agents-graph-title {
    text-align: center;
    font-family: var(--serif, "Source Serif 4", Georgia, serif);
    font-weight: 400;
    font-size: clamp(1.6rem, 3.2vw, 2.4rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--fg, #EAF1FB);
    margin: 3rem auto 1.2rem;
    max-width: 720px;
    /* Leve resplandor cyan para hacerlo memorable sin ser estridente */
    text-shadow: 0 0 24px rgba(52, 224, 208, 0.18);
}

.agents-graph-wrap {
    margin: 0 auto 2rem;
    max-width: 1100px;
    text-align: center;
}

/* Container del WebGL canvas — necesita altura definida para que Three.js
   pueda calcular el viewport correctamente. */
.brujula-3d-graph {
    width: 100%;
    height: 620px;
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    /* Fondo de espacio profundo — muy oscuro casi negro con leve tinte violeta-azul
       de nebulosa. El campo de 2000 estrellas Three.js se renderiza encima. */
    background:
        radial-gradient(ellipse at 50% 40%, rgba(76, 49, 159, 0.18) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(34, 197, 196, 0.08) 0%, transparent 45%),
        radial-gradient(ellipse at 20% 80%, rgba(255, 107, 138, 0.06) 0%, transparent 40%),
        linear-gradient(180deg, #02030f 0%, #050817 50%, #03051a 100%);
    box-shadow:
        inset 0 0 100px rgba(0, 0, 0, 0.7),
        0 20px 60px -20px rgba(0, 0, 0, 0.8);
    cursor: grab;
}

.brujula-3d-graph:active {
    cursor: grabbing;
}

.brujula-3d-graph canvas {
    display: block;
    border-radius: 16px;
}

/* Fallback para no-WebGL / no-JS / CDN caído */
.brujula-3d-fallback {
    padding: 3rem 2rem;
    text-align: center;
    background: rgba(6, 11, 20, 0.4);
    border: 1px solid rgba(52, 224, 208, 0.2);
    border-radius: 16px;
    color: var(--fg-dim, rgba(234, 241, 251, 0.65));
    font-family: var(--sans);
}

.brujula-3d-fallback a {
    color: var(--cyan, #34E0D0);
    text-decoration: underline;
}

/* Caption debajo del grafo + hint de interacción */
.agents-graph-caption {
    font-family: var(--sans);
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--fg-dim, rgba(234, 241, 251, 0.6));
    max-width: 620px;
    margin: 1.2rem auto 0;
}

.agents-graph-caption::after {
    content: "Arrastrá para mover · Scroll para zoom · Click en un nodo para acercar";
    opacity: 0.55;
    font-size: 0.82rem;
    display: block;
    margin-top: 0.6rem;
    letter-spacing: 0.3px;
}

@media (max-width: 900px) {
    .brujula-3d-graph { height: 520px; }
}

@media (max-width: 700px) {
    .agents-graph-wrap { margin: 2rem auto 1.5rem; }
    .brujula-3d-graph { height: 420px; }
    .agents-graph-caption { font-size: 0.88rem; padding: 0 1rem; }
}

@media (max-width: 480px) {
    .brujula-3d-graph { height: 360px; }
}