/* ---- Tokens ---- */
:root {
    --bg: #000000;
    --bg-elevated: #0c0c0c;
    --fg: #ffffff;
    --fg-muted: #b3b3b3;
    --accent: #a6da35;
    --accent-fg: #a6da35;
    --accent-ink: #0a0a0a;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.3);
    --shard-secondary: #1a1a1a;
    --header-bg: rgba(0, 0, 0, 0.85);
    --blue: #256eff;
    --orange: #fe7200;
    --yellow: #f7d000;

    --font-display: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;

    --wrap: 1080px;
}

/* Primera visita, sin elección guardada todavía: sigue el sistema operativo.
   En cuanto la persona elige algo explícito, PHP marca data-theme en <html>
   y los bloques de abajo mandan sobre esto — ver [data-theme]. */
@media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
        --bg: #ffffff;
        --bg-elevated: #f4f4f4;
        --fg: #0a0a0a;
        --fg-muted: #55575c;
        --accent-fg: #5c7a1f;
        --border: rgba(0, 0, 0, 0.08);
        --border-strong: rgba(0, 0, 0, 0.25);
        --shard-secondary: #ececec;
        --header-bg: rgba(255, 255, 255, 0.85);
    }
}

:root[data-theme="light"] {
    --bg: #ffffff;
    --bg-elevated: #f4f4f4;
    --fg: #0a0a0a;
    --fg-muted: #55575c;
    --accent-fg: #5c7a1f;
    --border: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.25);
    --shard-secondary: #ececec;
    --header-bg: rgba(255, 255, 255, 0.85);
}

:root[data-theme="dark"] {
    --bg: #000000;
    --bg-elevated: #0c0c0c;
    --fg: #ffffff;
    --fg-muted: #b3b3b3;
    --accent-fg: #a6da35;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.3);
    --shard-secondary: #1a1a1a;
    --header-bg: rgba(0, 0, 0, 0.85);
}

/* El logo blanco se pierde en fondo claro y el oscuro se pierde en fondo
   negro — no es un solo archivo, son dos, y el CSS decide cuál mostrar
   con la misma lógica de arriba, sin JavaScript. */
.logo-para-oscuro { display: block; }
.logo-para-claro { display: none; }

@media (prefers-color-scheme: light) {
    :root:not([data-theme]) .logo-para-oscuro { display: none; }
    :root:not([data-theme]) .logo-para-claro { display: block; }
}
:root[data-theme="light"] .logo-para-oscuro { display: none; }
:root[data-theme="light"] .logo-para-claro { display: block; }
:root[data-theme="dark"] .logo-para-oscuro { display: block; }
:root[data-theme="dark"] .logo-para-claro { display: none; }

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation: none !important; transition: none !important; }
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.wrap {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 24px;
}

a { color: inherit; }

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1.1;
    margin: 0 0 0.5em;
}

p { max-width: 62ch; }

/* ---- Header ---- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--header-bg);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    padding-bottom: 16px;
    position: relative;
}

.brand__logo { height: 22px; }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--fg);
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
    padding: 4px 8px;
}

.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a {
    text-decoration: none;
    color: var(--fg-muted);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 15px;
}
.site-nav a:hover,
.site-nav a:focus-visible { color: var(--fg); }

.site-nav__cta {
    color: var(--accent-ink) !important;
    background: var(--accent);
    padding: 8px 16px;
    border-radius: 4px;
}
.site-nav__cta:hover { color: var(--accent-ink) !important; opacity: 0.9; }

.selector-idioma { display: flex; gap: 8px; margin-left: 4px; }
.selector-idioma a {
    text-decoration: none; color: var(--fg-muted); font-size: 12px; font-weight: 600;
    padding: 4px 6px; border-radius: 3px;
}
.selector-idioma a:hover { color: var(--fg); }
.selector-idioma__activo, .selector-tema__activo { color: var(--accent-fg) !important; }

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* ---- Hero ---- */
.hero {
    position: relative;
    padding: 120px 0 100px;
    overflow: hidden;
}

/* Un solo gesto de forma: el ángulo del ícono de Athia, sangrado en la esquina.
   No es decoración genérica — es el propio imagotipo (la "montaña"/impulso),
   apenas insinuado. */
.hero__shard {
    position: absolute;
    right: -12%;
    top: -18%;
    width: 60%;
    height: 140%;
    background: var(--accent);
    clip-path: polygon(62% 0, 100% 0, 46% 100%, 30% 100%);
    opacity: 0.9;
    z-index: 0;
}
.hero__shard::after {
    content: "";
    position: absolute;
    inset: 0;
    left: -14%;
    background: var(--shard-secondary);
    clip-path: polygon(62% 0, 74% 0, 44% 100%, 30% 100%);
}

.hero__inner { position: relative; z-index: 1; max-width: 640px; }

.eyebrow {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 700;
    color: var(--accent-fg);
    margin: 0 0 14px;
    font-size: 18px;
}

.hero h1 {
    font-size: clamp(34px, 5vw, 52px);
    margin-bottom: 24px;
}

.hero__lead {
    color: var(--fg-muted);
    font-size: 18px;
    margin-bottom: 36px;
}

.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
    display: inline-block;
    text-decoration: none;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 15px;
    padding: 13px 24px;
    border-radius: 4px;
    border: 1px solid transparent;
}

.btn--accent {
    background: var(--accent);
    color: var(--accent-ink);
}
.btn--accent:hover { background: #b8ea47; }

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

.btn--lg { font-size: 17px; padding: 16px 30px; }

/* ---- Intro strip ---- */
.intro {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-elevated);
}
.intro__inner { padding: 48px 24px; }
.intro p {
    color: var(--fg-muted);
    font-size: 19px;
    max-width: 58ch;
}

/* ---- Athia Pro ---- */
.pro { padding: 100px 0; }
.pro--alt { background: var(--bg-elevated); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.pro__head { max-width: 620px; margin-bottom: 56px; }
.pro__head h2 { font-size: clamp(26px, 3.6vw, 36px); }
.pro__lead { color: var(--fg-muted); font-size: 18px; }

.feature-list {
    list-style: none;
    margin: 0 0 56px;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.feature-list__item {
    background: var(--bg);
    padding: 32px 28px;
    border-left: 3px solid var(--accent);
    border-left-color: var(--accent, var(--accent));
}
.feature-list__item { border-left-color: var(--accent); }
.feature-list__item h3 {
    font-size: 19px;
    margin-bottom: 10px;
}
.feature-list__item p {
    color: var(--fg-muted);
    font-size: 15.5px;
    margin: 0;
}

/* ---- Contacto ---- */
.contacto { padding: 100px 0 130px; border-top: 1px solid var(--border); }
.contacto__inner { text-align: center; max-width: 520px; margin: 0 auto; }
.contacto h2 { font-size: clamp(26px, 3.6vw, 34px); }
.contacto p { color: var(--fg-muted); margin: 0 auto 32px; }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--border); padding: 40px 0; }
.site-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}
.site-footer__logo { height: 16px; opacity: 0.6; }
.site-footer p { color: var(--fg-muted); font-size: 14px; margin: 0; }

/* ---- Responsive ---- */
@media (max-width: 720px) {
    .hero { padding: 90px 0 70px; }
    .hero__shard { opacity: 0.5; width: 90%; right: -30%; }
    .feature-list { grid-template-columns: 1fr; }

    .nav-toggle { display: block; }
    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 20px 24px 24px;
    }
    .site-nav--abierto { display: flex; }
    .site-nav .selector-idioma,
    .site-nav .selector-tema { justify-content: flex-start; gap: 16px; }
}
