/* ============================================================
   STELION — Landing page
   Paleta blanco / negro / verde #7cd11a — alineada con la app
   (mobile/src/ui/theme.ts) y con stelion.com.uy. Mobile-first.
   ============================================================ */

:root {
    /* Superficies */
    --bg: #ffffff;
    --bg-soft: #f0f5fa;
    --bg-card: #ffffff;
    --ink: #111111;              /* negro de marca: footer, CTA, botón oscuro */
    --border: #d1d5db;
    --border-soft: #e5e9ef;

    /* Texto */
    --text: #1e293b;
    --text-dim: #6f6a6a;
    --on-ink: #ffffff;
    --on-ink-dim: #b9bfc7;

    /* Acento */
    --accent: #7cd11a;                        /* verde puro: fills, bordes, gráficos */
    --accent-soft: rgba(124, 209, 26, 0.12);
    --accent-line: rgba(124, 209, 26, 0.38);
    --accent-dark: #1a2e05;                   /* texto/íconos SOBRE el verde */
    --accent-text: #5da814;                   /* verde para texto grande sobre blanco */
    --accent-ink: #3d7a08;                    /* verde para texto chico sobre blanco */

    --radius: 16px;
    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3 {
    font-family: var(--font-display);
    color: var(--ink);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

section { padding: 4.5rem 0; }

.section-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent-ink);
    background: var(--accent-soft);
    border: 1px solid var(--accent-line);
    border-radius: 999px;
    padding: 0.35rem 0.9rem;
    margin-bottom: 1.1rem;
}

.section-title {
    font-size: clamp(1.7rem, 4.5vw, 2.6rem);
    margin-bottom: 0.9rem;
}

.section-sub {
    color: var(--text-dim);
    max-width: 620px;
    font-size: 1.05rem;
}

/* ---------- Header ---------- */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
    border-bottom-color: var(--border-soft);
    box-shadow: 0 1px 20px rgba(17, 17, 17, 0.05);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

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

.nav-brand img { height: 40px; width: auto; }

.brand-name {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--ink);
    letter-spacing: 0.01em;
}

.footer-brand .brand-name { display: block; margin: 0.4rem 0 0.3rem; color: var(--on-ink); }

.nav-links {
    display: none;
    align-items: center;
    gap: 1.8rem;
    list-style: none;
}

.nav-links a {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-dim);
    transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--accent-ink); }

.nav .nav-cta { display: none; }

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 0 9px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
}

.nav-toggle span {
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem 1.25rem 1.25rem;
    border-bottom: 1px solid var(--border-soft);
    background: rgba(255, 255, 255, 0.98);
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
    padding: 0.65rem 0.25rem;
    color: var(--text);
    font-weight: 500;
    border-bottom: 1px solid var(--border-soft);
}

.mobile-menu a:last-child { border-bottom: none; }

/* ---------- Botones ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.98rem;
    padding: 0.85rem 1.7rem;
    border-radius: 12px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-primary {
    background: var(--accent);
    color: var(--accent-dark);
    box-shadow: 0 6px 18px rgba(124, 209, 26, 0.28);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(124, 209, 26, 0.42);
}

.btn-ghost {
    background: transparent;
    color: var(--ink);
    border-color: var(--border);
}

.btn-ghost:hover {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--on-ink);
    transform: translateY(-2px);
}

/* Variante sobre fondo negro (CTA final / footer) */
.on-ink .btn-ghost {
    color: var(--on-ink);
    border-color: rgba(255, 255, 255, 0.28);
}

.on-ink .btn-ghost:hover {
    background: var(--on-ink);
    border-color: var(--on-ink);
    color: var(--ink);
}

.btn-sm { padding: 0.55rem 1.1rem; font-size: 0.88rem; }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    padding: 9.5rem 0 5.5rem;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 45% at 50% 0%, rgba(124, 209, 26, 0.16), transparent 70%),
        linear-gradient(rgba(17, 17, 17, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(17, 17, 17, 0.035) 1px, transparent 1px);
    background-size: 100% 100%, 48px 48px, 48px 48px;
    mask-image: linear-gradient(to bottom, black 55%, transparent);
    -webkit-mask-image: linear-gradient(to bottom, black 55%, transparent);
    pointer-events: none;
}

.hero .container { position: relative; }

.hero-logo {
    height: 150px;
    width: auto;
    margin: 0 auto 1.8rem;
    filter: drop-shadow(0 14px 30px rgba(124, 209, 26, 0.28));
}

.hero h1 {
    font-size: clamp(2.1rem, 6.5vw, 3.6rem);
    max-width: 820px;
    margin: 0 auto 1.1rem;
}

/* Resaltado verde del titular */
.hero h1 .glow {
    color: var(--accent-text);
    background: linear-gradient(transparent 62%, rgba(124, 209, 26, 0.28) 62%);
    padding: 0 0.1em;
}

.hero-sub {
    color: var(--text-dim);
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    max-width: 640px;
    margin: 0 auto 2.2rem;
}

.hero-sub strong { color: var(--ink); }

.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.9rem;
}

.hero-meta {
    margin-top: 2.6rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
}

.chip {
    font-size: 0.8rem;
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.35rem 0.85rem;
    background: #ffffff;
}

.chip strong { color: var(--accent-ink); font-weight: 600; }

/* ---------- Bloques con fondo suave ---------- */
.problema,
.como-funciona,
.para-quien {
    background: var(--bg-soft);
    border-top: 1px solid var(--border-soft);
    border-bottom: 1px solid var(--border-soft);
}

.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.1rem;
    margin-top: 2.4rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.7rem;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-line);
    box-shadow: 0 14px 34px rgba(17, 17, 17, 0.08);
}

.card-icon {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--accent-soft);
    border: 1px solid var(--accent-line);
    margin-bottom: 1.1rem;
}

.card-icon svg { width: 24px; height: 24px; stroke: var(--accent-ink); }

.card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }

.card p { color: var(--text-dim); font-size: 0.95rem; }

.card .pill {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-ink);
    margin-bottom: 0.6rem;
}

/* ---------- Solución ---------- */
.solucion-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    align-items: center;
    margin-top: 1rem;
}

.solucion-list { list-style: none; margin-top: 1.6rem; display: flex; flex-direction: column; gap: 1.1rem; }

.solucion-list li { display: flex; gap: 0.9rem; align-items: flex-start; }

.check {
    flex: none;
    width: 26px;
    height: 26px;
    margin-top: 2px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.check svg { width: 13px; height: 13px; stroke: var(--accent-dark); }

.solucion-list strong { display: block; font-family: var(--font-display); color: var(--ink); }

.solucion-list span { color: var(--text-dim); font-size: 0.94rem; }

/* Mock de la app en CSS puro — replica la UI real (fondo blanco) */
.phone-mock {
    width: min(290px, 80vw);
    margin: 0 auto;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 34px;
    padding: 1.1rem;
    box-shadow: 0 24px 60px rgba(17, 17, 17, 0.14);
}

.phone-notch {
    width: 90px;
    height: 5px;
    background: var(--border);
    border-radius: 999px;
    margin: 0 auto 1rem;
}

.phone-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-soft);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    padding: 0.7rem 0.85rem;
    margin-bottom: 0.6rem;
    font-size: 0.8rem;
}

.phone-row .label { color: var(--text-dim); }

.phone-row .value { font-family: var(--font-display); font-weight: 600; color: var(--ink); }

.phone-row .value.accent { color: var(--accent-ink); }

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px rgba(124, 209, 26, 0.22);
    margin-right: 6px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.35; }
}

.phone-charge-bar {
    height: 8px;
    border-radius: 999px;
    background: var(--bg-soft);
    border: 1px solid var(--border-soft);
    overflow: hidden;
    margin: 0.9rem 0 0.4rem;
}

.phone-charge-bar i {
    display: block;
    height: 100%;
    width: 68%;
    border-radius: 999px;
    background: var(--accent);
}

.phone-charge-caption {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    color: var(--text-dim);
    margin-bottom: 0.9rem;
}

.phone-btn {
    text-align: center;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--accent-dark);
    background: var(--accent);
    border-radius: 12px;
    padding: 0.7rem;
}

/* ---------- Cómo funciona ---------- */
.steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.4rem;
    margin-top: 2.6rem;
    counter-reset: step;
}

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

.step:hover {
    transform: translateY(-4px);
    border-color: var(--accent-line);
    box-shadow: 0 14px 34px rgba(17, 17, 17, 0.08);
}

.step-num {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--accent-dark);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.step h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }

.step p { color: var(--text-dim); font-size: 0.92rem; }

/* ---------- Tecnología ---------- */
.tech-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1rem, 3vw, 1.25rem);
    color: var(--accent-ink);
    background: var(--accent-soft);
    border: 1px solid var(--accent-line);
    border-radius: 14px;
    padding: 0.9rem 1.6rem;
    margin: 2rem 0 0.6rem;
}

.tech-badge svg { width: 22px; height: 22px; stroke: var(--accent-ink); }

.tech-note { color: var(--text-dim); font-size: 0.9rem; max-width: 560px; }

.tech-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.1rem;
    margin-top: 2.2rem;
}

/* ---------- CTA final (bloque negro) ---------- */
.cta-final {
    position: relative;
    text-align: center;
    overflow: hidden;
}

.cta-box {
    position: relative;
    background: var(--ink);
    border-radius: 22px;
    padding: 3rem 1.5rem;
    max-width: 760px;
    margin: 0 auto;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 70% at 50% 100%, rgba(124, 209, 26, 0.22), transparent 70%);
    pointer-events: none;
}

.cta-box > * { position: relative; }

.cta-box h2 { font-size: clamp(1.6rem, 4.5vw, 2.3rem); margin-bottom: 0.8rem; color: var(--on-ink); }

.cta-box p { color: var(--on-ink-dim); max-width: 520px; margin: 0 auto 1.8rem; }

.cta-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.9rem;
}

/* ---------- Footer (negro) ---------- */
.site-footer {
    padding: 2.6rem 0 2rem;
    background: var(--ink);
    color: var(--on-ink-dim);
}

.footer-grid {
    display: flex;
    flex-direction: column;
    gap: 1.6rem;
    align-items: center;
    text-align: center;
}

/* El logo es negro sobre transparente: sobre el footer negro va invertido */
.site-footer .footer-brand img { height: 56px; margin: 0 auto 0.6rem; filter: invert(1); }

.footer-brand p { color: var(--on-ink-dim); font-size: 0.85rem; max-width: 300px; }

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.4rem;
    list-style: none;
}

.footer-links a { color: var(--on-ink-dim); font-size: 0.9rem; transition: color 0.2s ease; }

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

.footer-copy {
    margin-top: 2rem;
    padding-top: 1.4rem;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    text-align: center;
    color: var(--on-ink-dim);
    font-size: 0.8rem;
}

.footer-copy a { color: var(--on-ink-dim); }
.footer-copy a:hover { color: var(--accent); }

/* ---------- Animaciones de entrada ---------- */
.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible { opacity: 1; transform: none; }

.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .status-dot { animation: none; }
    .btn:hover, .card:hover, .step:hover { transform: none; }
}

/* ---------- Breakpoints ---------- */
@media (min-width: 640px) {
    .hero-actions, .cta-actions { flex-direction: row; justify-content: center; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .tech-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
    section { padding: 6rem 0; }
    .nav-links { display: flex; }
    .nav .nav-cta { display: inline-flex; }
    .nav-toggle { display: none; }
    .cards-grid { grid-template-columns: repeat(3, 1fr); }
    .steps { grid-template-columns: repeat(4, 1fr); }
    .steps.steps-3 { grid-template-columns: repeat(3, 1fr); }
    .tech-grid { grid-template-columns: repeat(3, 1fr); }
    .solucion-grid { grid-template-columns: 1.1fr 0.9fr; }
    .footer-grid { flex-direction: row; justify-content: space-between; text-align: left; align-items: flex-start; }
    .site-footer .footer-brand img { margin: 0 0 0.6rem; }
}