/* ============================================================
   YT Projects — Portada pública
   ============================================================
   Comparte el lenguaje visual de la aplicación (rojo YouTube sobre violeta
   profundo, Outfit + Inter, superficies de vidrio) y le suma una voz propia:
   una tipografía monoespaciada para el material del producto —etiquetas,
   fechas, @usuarios— y una consola de consulta como pieza central, porque
   preguntarle al canal es lo que distingue a la plataforma. */

:root {
    --tint: 255, 255, 255;
    --shade: 0, 0, 0;
    /* Negro puro en oscuro: el píxel apagado del OLED no gasta batería.
       Mismo criterio que la aplicación (ver style.css): el relieve lo dan
       los bordes, no fondos un poco más claros. */
    --panel-rgb: 0, 0, 0;

    --bg: #000000;
    --bg-2: #000000;
    --surface: rgba(var(--tint), 0.04);
    --border: rgba(var(--tint), 0.18);

    --primary: #ff2e54;
    --primary-soft: #ff5274;
    --ok: #10b981;

    --text: #f3f4f6;
    --muted: #9ca3af;
    --faint: rgba(var(--tint), 0.55);

    --display: 'Outfit', system-ui, sans-serif;
    --body: 'Inter', system-ui, sans-serif;
    --mono: 'JetBrains Mono', ui-monospace, monospace;

    --r-sm: 10px;
    --r-md: 16px;
    --r-lg: 26px;
    --maxw: 1180px;
}

:root[data-theme="light"] {
    --tint: 51, 65, 85;
    --shade: 100, 116, 139;
    --panel-rgb: 255, 255, 255;

    --bg: #eef1f6;
    --bg-2: #e4e8f0;
    --surface: rgba(255, 255, 255, 0.75);
    --border: rgba(51, 65, 85, 0.14);

    --primary: #e01b3e;
    --primary-soft: #d61b3f;

    --text: #1f2937;
    --muted: #5b6472;
    --faint: rgba(51, 65, 85, 0.6);
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
    font-family: var(--body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Resplandor ambiental: el mismo criterio de la aplicación — en oscuro es
   negro plano, porque un gradiente a pantalla completa enciende todos los
   píxeles del OLED y anula el ahorro. El tema claro lo conserva. */
.bg-glow {
    position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background: #000000;
}
:root[data-theme="light"] .bg-glow {
    background:
        radial-gradient(60rem 40rem at 78% -8%, rgba(255, 46, 84, 0.10), transparent 60%),
        radial-gradient(50rem 34rem at 8% 12%, rgba(139, 92, 246, 0.08), transparent 62%),
        linear-gradient(160deg, var(--bg-2) 0%, var(--bg) 55%);
}

a { color: inherit; }

.skip-link {
    position: absolute; left: -9999px; top: 0; z-index: 100;
    background: var(--primary); color: #fff; padding: 0.75rem 1.25rem; border-radius: 0 0 var(--r-sm) 0;
    text-decoration: none; font-weight: 600;
}
.skip-link:focus { left: 0; }

:where(a, button, .btn):focus-visible {
    outline: 2px solid var(--primary-soft);
    outline-offset: 3px;
    border-radius: var(--r-sm);
}

.mono { font-family: var(--mono); font-size: 0.86em; color: var(--muted); }

/* ---------------- Navegación ---------------- */
.nav {
    position: sticky; top: 0; z-index: 50;
    display: flex; align-items: center; gap: 2rem;
    padding: 1rem clamp(1rem, 4vw, 2.5rem);
    background: rgba(var(--panel-rgb), 0.72);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
}
.brand {
    display: flex; align-items: center; gap: 0.6rem;
    font-family: var(--display); font-weight: 800; font-size: 1.15rem;
    text-decoration: none; letter-spacing: -0.02em;
}
.brand i { color: var(--primary); font-size: 1.5rem; }

.nav-links { display: flex; gap: 1.75rem; margin-right: auto; }
.nav-links a {
    text-decoration: none; color: var(--muted); font-size: 0.9rem; font-weight: 500;
    padding: 0.35rem 0; border-bottom: 1px solid transparent;
}
.nav-links a:hover { color: var(--text); border-bottom-color: var(--primary); }

.nav-actions { display: flex; align-items: center; gap: 0.6rem; }

.icon-toggle {
    width: 2.3rem; height: 2.3rem; border-radius: 50%;
    background: var(--surface); border: 1px solid var(--border); color: var(--text);
    cursor: pointer; display: grid; place-items: center; font-size: 0.9rem;
}
.icon-toggle:hover { border-color: var(--primary); }

.btn {
    display: inline-flex; align-items: center; gap: 0.55rem;
    font-family: var(--body); font-size: 0.9rem; font-weight: 600;
    padding: 0.62rem 1.15rem; border-radius: var(--r-sm);
    text-decoration: none; cursor: pointer; border: 1px solid transparent;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    white-space: nowrap;
}
.btn-solid {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-soft) 100%);
    color: #fff; box-shadow: 0 6px 20px rgba(255, 46, 84, 0.28);
}
.btn-solid:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(255, 46, 84, 0.36); }
.btn-ghost { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--primary); }
.btn-lg { font-size: 1rem; padding: 0.85rem 1.6rem; }

/* ---------------- Hero ---------------- */
.hero {
    max-width: var(--maxw); margin: 0 auto;
    padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 4vw, 2.5rem) clamp(2rem, 5vw, 4rem);
    display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem); align-items: center;
}
/* Ninguna columna puede crecer por encima del viewport por su contenido mínimo */
.hero > * { min-width: 0; }

.eyebrow {
    font-family: var(--mono); font-size: 0.75rem; font-weight: 500;
    letter-spacing: 0.14em; text-transform: uppercase; color: var(--primary-soft);
    margin-bottom: 1.1rem;
}

.hero h1 {
    font-family: var(--display); font-weight: 800;
    font-size: clamp(2.4rem, 5.2vw, 4rem); line-height: 1.03; letter-spacing: -0.035em;
    margin-bottom: 1.4rem;
}
.hero h1 em {
    font-style: normal;
    background: linear-gradient(100deg, var(--primary) 10%, var(--primary-soft) 90%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}

.lead { font-size: clamp(1rem, 1.5vw, 1.12rem); color: var(--muted); max-width: 46ch; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }
.hero-note { margin-top: 1rem; font-size: 0.85rem; color: var(--faint); min-height: 1.2rem; }

/* --------- Consola: la pieza que resume el producto --------- */
.console { display: flex; flex-direction: column; gap: 0.75rem; }
.console-caption {
    font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--faint);
}
.console-window {
    background: rgba(var(--panel-rgb), 0.86);
    border: 1px solid var(--border); border-radius: var(--r-md);
    box-shadow: 0 24px 60px rgba(var(--shade), 0.45);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
}
.console-bar {
    display: flex; align-items: center; gap: 0.45rem; overflow: hidden;
    padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--border);
    background: rgba(var(--tint), 0.03);
}
.console-dot { width: 0.6rem; height: 0.6rem; border-radius: 50%; background: rgba(var(--tint), 0.18); flex-shrink: 0; }
.console-title {
    /* min-width:0 es lo que permite que el recorte funcione dentro del flex
       en vez de estirar la tarjeta (y con ella el hero) en móvil */
    margin-left: 0.6rem; min-width: 0; flex: 1;
    font-family: var(--mono); font-size: 0.7rem; color: var(--faint);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.console-body { padding: 1.25rem; display: flex; flex-direction: column; gap: 1.1rem; }
.console-label {
    font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.09em;
    text-transform: uppercase; color: var(--faint); margin-bottom: 0.45rem;
}
.console-question {
    font-family: var(--display); font-size: clamp(1rem, 1.7vw, 1.2rem); font-weight: 600;
    line-height: 1.35; min-height: 2.6em;
}
.caret {
    display: inline-block; width: 2px; height: 1.05em; margin-left: 2px;
    background: var(--primary); vertical-align: text-bottom; animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Los pasos aparecen encadenados: es el orden real del flujo */
.console-step { opacity: 0; transform: translateY(6px); transition: opacity 0.45s ease, transform 0.45s ease; }
.console-step.on { opacity: 1; transform: none; }

.console-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag {
    font-family: var(--mono); font-size: 0.76rem;
    padding: 0.22rem 0.6rem 0.22rem 0.5rem; border-radius: 999px;
    background: rgba(var(--tint), 0.05); border: 1px solid var(--border);
    border-left: 3px solid var(--c, var(--primary)); color: var(--text);
}
.console-count {
    font-family: var(--mono); background: rgba(255, 46, 84, 0.16); color: var(--primary-soft);
    padding: 0.05rem 0.4rem; border-radius: 999px; margin-left: 0.3rem;
}
.console-results { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.console-results li {
    display: flex; gap: 0.75rem; align-items: baseline; min-width: 0;
    font-size: 0.88rem; padding: 0.55rem 0.7rem; overflow-wrap: anywhere;
    background: rgba(var(--tint), 0.03); border: 1px solid var(--border); border-radius: var(--r-sm);
}
.console-results .mono { flex-shrink: 0; }
.console-answer {
    font-size: 0.88rem; color: var(--muted); line-height: 1.6;
    border-left: 2px solid var(--primary); padding-left: 0.85rem;
}
.console-answer strong { color: var(--text); }
.console-foot { font-size: 0.78rem; color: var(--faint); display: flex; align-items: center; gap: 0.45rem; }
.console-foot i { color: var(--ok); }

/* ---------------- Secciones ---------------- */
.section {
    max-width: var(--maxw); margin: 0 auto;
    padding: clamp(3rem, 7vw, 5.5rem) clamp(1rem, 4vw, 2.5rem);
}
/* Principios y casos de uso se leen como un bloque: no necesitan aire entre ellos */
.section-tight { padding-top: clamp(1rem, 3vw, 2rem); padding-bottom: clamp(1rem, 2.5vw, 2rem); }

.section-head { max-width: 60ch; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head h2 {
    font-family: var(--display); font-weight: 700;
    font-size: clamp(1.7rem, 3.4vw, 2.5rem); line-height: 1.12; letter-spacing: -0.03em;
}
.section-lead { color: var(--muted); margin-top: 0.9rem; }

/* Pasos: la numeración marca una secuencia real, no adorno */
.steps {
    list-style: none; display: grid; gap: 1px;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    background: var(--border); border: 1px solid var(--border); border-radius: var(--r-md);
    overflow: hidden;
}
.step { background: var(--bg); padding: 1.6rem 1.4rem; display: flex; flex-direction: column; gap: 0.6rem; }
:root[data-theme="light"] .step { background: rgba(255, 255, 255, 0.7); }
.step-num {
    font-family: var(--mono); font-size: 0.78rem; font-weight: 700;
    color: var(--primary); letter-spacing: 0.08em;
}
.step h3 { font-family: var(--display); font-size: 1.08rem; font-weight: 600; letter-spacing: -0.01em; }
.step p { font-size: 0.9rem; color: var(--muted); }

/* Funciones */
.features { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); }
.feature {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-md);
    padding: 1.5rem; display: flex; flex-direction: column; gap: 0.65rem;
    transition: border-color 0.2s ease, transform 0.2s ease;
}
.feature:hover { border-color: rgba(255, 46, 84, 0.35); transform: translateY(-3px); }
.feature i { font-size: 1.35rem; color: var(--primary); }
.feature h3 { font-family: var(--display); font-size: 1.06rem; font-weight: 600; letter-spacing: -0.01em; }
.feature p { font-size: 0.9rem; color: var(--muted); }
.feature-wide { grid-column: span 2; }
.feature-wide h3 { font-size: 1.25rem; }
.feature-wide p { font-size: 0.96rem; }

/* Principios */
.principles { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.principle {
    border-top: 2px solid var(--primary); padding-top: 1.1rem;
    display: flex; flex-direction: column; gap: 0.6rem;
}
.principle h3 {
    font-family: var(--display); font-size: 1.05rem; font-weight: 600;
    display: flex; align-items: center; gap: 0.55rem;
}
.principle h3 i { color: var(--primary); font-size: 0.95rem; }
.principle p { font-size: 0.9rem; color: var(--muted); }

/* Casos de uso */
.uses { display: grid; gap: 1.75rem 2.5rem; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.use { border-left: 1px solid var(--border); padding-left: 1.25rem; }
.use h3 { font-family: var(--display); font-size: 1.02rem; font-weight: 600; margin-bottom: 0.45rem; }
.use p { font-size: 0.9rem; color: var(--muted); }

/* Cierre */
.closing {
    max-width: var(--maxw); margin: 0 auto clamp(3rem, 7vw, 5rem);
    padding: clamp(2.5rem, 6vw, 4rem) clamp(1.5rem, 5vw, 3.5rem);
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
    text-align: center;
}
.closing h2 {
    font-family: var(--display); font-weight: 700;
    font-size: clamp(1.6rem, 3.2vw, 2.3rem); letter-spacing: -0.03em; margin-bottom: 0.8rem;
}
.closing p { color: var(--muted); max-width: 52ch; margin: 0 auto; }
.closing .hero-cta { justify-content: center; }

/* Pie */
.footer {
    border-top: 1px solid var(--border);
    padding: 2rem clamp(1rem, 4vw, 2.5rem);
    display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; align-items: center;
    max-width: var(--maxw); margin: 0 auto;
}
.footer-brand { font-family: var(--display); font-weight: 700; display: flex; align-items: center; gap: 0.5rem; }
.footer-brand i { color: var(--primary); }
.footer p { font-size: 0.85rem; color: var(--faint); }

/* ---------------- Adaptación a pantallas pequeñas ---------------- */
@media (max-width: 940px) {
    .hero { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .feature-wide { grid-column: span 1; }
}
@media (max-width: 560px) {
    .nav { gap: 0.75rem; }
    .brand-text { display: none; }
    .btn { padding: 0.55rem 0.9rem; font-size: 0.85rem; }
    .btn-lg { width: 100%; justify-content: center; }
    .hero-cta { flex-direction: column; }
    .use { border-left: none; border-top: 1px solid var(--border); padding-left: 0; padding-top: 1rem; }
}

/* Logo de la aplicación en la marca y el pie */
.brand-logo {
    display: block; width: auto; height: 2rem; object-fit: contain; flex-shrink: 0;
    filter: drop-shadow(0 2px 6px rgba(var(--shade), 0.3));
}
.footer-brand .brand-logo { height: 1.6rem; }