/* ============================================================
   NOXSEND — SISTEMA DE DISEÑO
   Infraestructura de transferencia cifrada B2B

   Paleta
   ------
   Void         #050506   fondo base
   Surface      #0b0e14   paneles / tarjetas
   Surface Alt  #10141d   paneles elevados / filas alternas
   Ink          #f3f4f6   texto principal
   Cyan Signal  #38bdf8   acento primario (emisor, enlaces, foco)
   Indigo Depth #6366f1   acento secundario (degradados, Corporate)
   Alert Red    #f87171   brechas / errores

   Tipografía
   ----------
   Fraunces          — display, solo titulares grandes (uso restringido)
   Plus Jakarta Sans — texto de interfaz y cuerpo
   IBM Plex Mono     — datos técnicos: specs, cifrado, badges, pasos
============================================================ */

:root {
    /* Superficie */
    --void: #10141c;
    --surface: #171c27;
    --surface-alt: #1e2430;
    --border: rgba(255, 255, 255, 0.09);
    --border-strong: rgba(255, 255, 255, 0.18);

    /* Texto */
    --ink: #f5f6f8;
    --ink-soft: #aab3c4;
    --ink-faint: #7a8393;

    /* Marca */
    --accent: #38bdf8;
    --accent-2: #6366f1;
    --accent-solid: #0ea5e9;
    --accent-soft: rgba(56, 189, 248, 0.10);
    --accent-glow: rgba(56, 189, 248, 0.35);

    /* Estado */
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.08);
    --success: #4ade80;

    /* Tipografía */
    --font-display: 'Fraunces', serif;
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, monospace;

    /* Movimiento */
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============================================================
   BASE
============================================================ */

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--void);
    background-image:
        radial-gradient(ellipse 900px 560px at 8% -6%, rgba(56, 189, 248, 0.10), transparent 55%),
        radial-gradient(ellipse 1000px 640px at 94% 30%, rgba(99, 102, 241, 0.08), transparent 55%),
        radial-gradient(ellipse 850px 560px at 10% 78%, rgba(56, 189, 248, 0.07), transparent 55%),
        radial-gradient(ellipse 800px 520px at 100% 100%, rgba(99, 102, 241, 0.06), transparent 55%);
    background-attachment: fixed;
    background-repeat: no-repeat;
}

::selection {
    background: rgba(56, 189, 248, 0.25);
    color: #fff;
}

/* Foco de teclado visible en toda la interfaz */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
    }
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--void); }
::-webkit-scrollbar-thumb { background: #1e293b; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(56, 189, 248, 0.4); }

/* ============================================================
   TIPOGRAFÍA — roles
============================================================ */

.font-display {
    font-family: var(--font-display);
    letter-spacing: -0.01em;
}

.font-mono {
    font-family: var(--font-mono);
}

/* Texto en degradado — reutilizable, y aplicado por defecto al span
   de énfasis dentro de #hero-title (independiente de la clase que
   inicio.js inyecte al cambiar de idioma) */
.text-gradient,
#hero-title span {
    background: linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-faint);
}

/* ============================================================
   FONDO DE CABECERA — malla técnica + grano
============================================================ */

.hero-gradient {
    position: relative;
    background: radial-gradient(circle at 50% 0%, #0d1a2b 0%, var(--void) 60%);
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.07) 1px, transparent 1px);
    background-size: 44px 44px;
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 0%, black 20%, transparent 75%);
    mask-image: radial-gradient(ellipse 60% 60% at 50% 0%, black 20%, transparent 75%);
    pointer-events: none;
}

.grain {
    position: absolute;
    inset: 0;
    opacity: 0.04;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================================
   ICONOS — sprite SVG (currentColor)
============================================================ */

.icon {
    width: 1.15rem;
    height: 1.15rem;
    flex-shrink: 0;
}

/* ============================================================
   PANEL DE CIFRADO — elemento de firma de la página
   Visualiza literalmente el único momento que importa:
   texto legible en el navegador del emisor → ruido cifrado
   en el servidor. Es el argumento del producto hecho imagen.
============================================================ */

.cipher-panel {
    background: linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 1.85rem;
    box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.65);
}

.cipher-panel__head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    margin-bottom: 1.4rem;
    border-bottom: 1px dashed var(--border-strong);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--ink-soft);
}

.cipher-panel__file {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cipher-panel__file .icon {
    width: 1rem;
    height: 1rem;
    color: var(--ink-faint);
}

.cipher-panel__head .icon--lock {
    color: var(--accent);
    width: 1rem;
    height: 1rem;
}

.cipher-panel__label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin-bottom: 0.7rem;
}

.cipher-panel__plain {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.75;
    color: var(--ink-soft);
}

.redact-bar {
    display: inline-block;
    background: var(--ink);
    color: transparent;
    border-radius: 2px;
    user-select: none;
    letter-spacing: -0.05em;
}

.cipher-panel__transform {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 1.3rem 0;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    color: var(--accent);
}

.cipher-panel__transform .icon {
    width: 0.95rem;
    height: 0.95rem;
    animation: bob 2.4s ease-in-out infinite;
}

@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(3px); }
}

.cipher-panel__cipher {
    position: relative;
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 2;
    color: var(--accent);
    word-break: break-all;
    background: var(--accent-soft);
    border: 1px solid rgba(56, 189, 248, 0.18);
    padding: 0.95rem 1rem;
    border-radius: 12px;
}

.cipher-panel__cipher::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 35%, rgba(56, 189, 248, 0.28) 50%, transparent 65%);
    background-size: 220% 100%;
    animation: cipher-sweep 5.5s ease-in-out infinite;
}

@keyframes cipher-sweep {
    0% { background-position: 200% 0; }
    100% { background-position: -60% 0; }
}

@media (prefers-reduced-motion: reduce) {
    .cipher-panel__cipher::after,
    .cipher-panel__transform .icon {
        animation: none;
    }
}

/* ============================================================
   INSIGNIAS DE CONFIANZA
============================================================ */

.trust-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--ink-soft);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    padding: 0.5rem 0.85rem;
    border-radius: 999px;
    transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.trust-badge:hover {
    border-color: var(--border-strong);
    color: var(--ink);
}

.trust-badge .icon {
    width: 0.9rem;
    height: 0.9rem;
    color: var(--accent);
}

/* ============================================================
   BOTONES
============================================================ */

.btn {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.btn::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.22), transparent);
    transform: translateX(-130%);
    transition: transform 0.7s var(--ease);
}

.btn:hover::after {
    transform: translateX(130%);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-solid), var(--accent-2));
    box-shadow: 0 12px 30px -10px var(--accent-glow);
}

.btn-primary:hover {
    box-shadow: 0 16px 38px -8px var(--accent-glow);
}

/* ============================================================
   NAVEGACIÓN
============================================================ */

.nav-link {
    position: relative;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.25s var(--ease);
}

.nav-link:hover::after {
    width: 100%;
}

/* ============================================================
   MARQUEE DE RIESGOS
============================================================ */

.marquee-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    user-select: none;
    padding: 0.4rem 0;
    -webkit-mask-image: linear-gradient(to right, transparent, black 22%, black 78%, transparent);
    mask-image: linear-gradient(to right, transparent, black 22%, black 78%, transparent);
}

.marquee-track {
    display: flex;
    gap: 1.5rem;
    width: max-content;
    animation: marquee-infinite 46s linear infinite;
}

.marquee-track:hover {
    animation-play-state: paused;
}

.marquee-pill {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    white-space: nowrap;
    background: linear-gradient(180deg, rgba(248, 113, 113, 0.07), rgba(0, 0, 0, 0.35));
    border: 1px solid rgba(248, 113, 113, 0.22);
    padding: 0.9rem 1.5rem;
    border-radius: 16px;
    font-weight: 600;
    font-size: 0.78rem;
    letter-spacing: 0.02em;
    color: #d1d5db;
    box-shadow: 0 12px 24px -12px rgba(127, 29, 29, 0.35);
}

@keyframes marquee-infinite {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@media (max-width: 768px) {
    .marquee-container {
        -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
        mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
    }
    .marquee-track {
        animation-duration: 30s;
    }
}

/* ============================================================
   PASOS — "Cómo funciona" (proceso real, orden con significado)
============================================================ */

.step-card {
    position: relative;
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 1.6rem;
    transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.step-card:hover {
    border-color: rgba(56, 189, 248, 0.28);
    transform: translateY(-3px);
}

.step-card__index {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    letter-spacing: 0.08em;
    margin-bottom: 0.9rem;
}

.step-connector {
    display: none;
}

@media (min-width: 768px) {
    .step-connector {
        display: block;
        position: absolute;
        top: 2.4rem;
        left: 100%;
        width: 2rem;
        height: 1px;
        background: repeating-linear-gradient(to right, var(--border-strong) 0 6px, transparent 6px 12px);
        z-index: 1;
    }
}

/* ============================================================
   TARJETAS DE PLATAFORMA (Emisor / Receptor)
============================================================ */

.platform-card {
    background: rgba(255, 255, 255, 0.015);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

/* ============================================================
   FICHA TÉCNICA — specs reales, formato etiqueta/valor
============================================================ */

.spec-sheet {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 22px;
    overflow: hidden;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.4rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
}

.spec-row:last-of-type {
    border-bottom: none;
}

.spec-row:nth-of-type(odd) {
    background: rgba(255, 255, 255, 0.012);
}

.spec-row dt {
    color: var(--ink-faint);
}

.spec-row dd {
    font-family: var(--font-mono);
    color: var(--ink);
    text-align: right;
}

/* ============================================================
   TARJETAS DE PRECIO
============================================================ */

.price-card {
    position: relative;
    transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.price-card:hover {
    transform: translateY(-4px);
}

.price-card--featured {
    background:
        linear-gradient(var(--void), var(--void)) padding-box,
        linear-gradient(150deg, var(--accent), var(--accent-2)) border-box;
    border: 1px solid transparent;
}

.price-number {
    font-family: var(--font-display);
    font-weight: 600;
    font-optical-sizing: auto;
}

/* ============================================================
   NAV SECUNDARIA — páginas internas (legal, seguridad, auth, 404)
============================================================ */

.subnav {
    width: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

/* ============================================================
   PROSA LEGAL — Aviso Legal, Privacidad, Cookies, Términos
============================================================ */

.legal-prose {
    max-width: 740px;
}

.legal-prose h2 {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 1.4rem;
    color: var(--ink);
    margin-top: 2.75rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.legal-prose h2:first-of-type {
    margin-top: 0;
}

.legal-prose p {
    color: var(--ink-soft);
    line-height: 1.8;
    font-size: 0.94rem;
    font-weight: 300;
    margin-bottom: 1.1rem;
}

.legal-prose ul {
    margin: 1rem 0 1.4rem;
    padding-left: 1.3rem;
    list-style: disc;
}

.legal-prose li {
    color: var(--ink-soft);
    line-height: 1.75;
    font-size: 0.94rem;
    font-weight: 300;
    margin-bottom: 0.55rem;
}

.legal-prose strong {
    color: var(--ink);
    font-weight: 600;
}

.legal-prose a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.legal-placeholder {
    display: inline-block;
    background: rgba(248, 113, 113, 0.12);
    border: 1px solid rgba(248, 113, 113, 0.25);
    color: #fca5a5;
    padding: 0.05rem 0.5rem;
    border-radius: 5px;
    font-family: var(--font-mono);
    font-size: 0.82em;
    white-space: nowrap;
}

.legal-callout {
    background: var(--accent-soft);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 16px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2.5rem;
}

.legal-callout p {
    color: var(--ink-soft);
    font-size: 0.85rem;
    margin: 0;
    line-height: 1.7;
}

/* ============================================================
   FICHA DE DOS COLUMNAS — "puede ver / no puede ver"
============================================================ */

.visibility-card {
    border-radius: 18px;
    padding: 1.6rem;
    border: 1px solid var(--border);
}

.visibility-card--allow {
    background: rgba(74, 222, 128, 0.04);
    border-color: rgba(74, 222, 128, 0.18);
}

.visibility-card--deny {
    background: rgba(56, 189, 248, 0.04);
    border-color: rgba(56, 189, 248, 0.18);
}

.visibility-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.visibility-card li {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.86rem;
    color: var(--ink-soft);
    line-height: 1.5;
    margin-bottom: 0.85rem;
}

.visibility-card li:last-child { margin-bottom: 0; }

/* ============================================================
   FORMULARIOS — login / registro
============================================================ */

.form-field label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.55rem;
}

.form-field input,
.form-field select {
    width: 100%;
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid var(--border-strong);
    padding: 0.9rem 1rem;
    border-radius: 12px;
    color: var(--ink);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
    appearance: none;
    -webkit-appearance: none;
}

.form-field input:focus,
.form-field select:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-field select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239aa3b4' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.auth-card {
    background: linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%);
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.6);
}

/* ============================================================
   404
============================================================ */

.error-code {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(5rem, 18vw, 10rem);
    line-height: 1;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* ============================================================
   BANNER DE COOKIES
============================================================ */

.cookie-banner {
    position: fixed;
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
    z-index: 999;
    max-width: 780px;
    margin: 0 auto;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: 18px;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.65);
    display: none;
    flex-direction: column;
    gap: 1rem;
}

.cookie-banner.is-visible {
    display: flex;
}

@media (min-width: 640px) {
    .cookie-banner {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 1.5rem;
    }
}

/* ============================================================
   RESPONSIVE — ajustes finos
============================================================ */

@media (max-width: 640px) {
    .cipher-panel {
        padding: 1.4rem;
    }
}