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

:root {
    --brand:    #e74c3c;
    --brand-dk: #c0392b;
    --dark:     #1a1a2e;
    --mid:      #2d2d44;
    --light-bg: #f7f8fc;
    --white:    #ffffff;
    --text:     #333344;
    --muted:    #666680;
    --border:   #e2e4ef;
    --radius:   12px;
    --shadow:   0 4px 24px rgba(0,0,0,.10);
}

html { scroll-behavior: smooth; }
body  { font-family: 'Inter', sans-serif; color: var(--text); background: var(--white); }

/* ── NAV ── */
header {
    position: sticky; top: 0; z-index: 100;
    background: var(--dark);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 5%;
    height: 64px;
    box-shadow: 0 2px 12px rgba(0,0,0,.3);
}
.logo {
    font-size: 1.5rem; font-weight: 800; color: var(--white); text-decoration: none;
    display: flex; align-items: center; gap: 8px;
}
.logo span { color: var(--brand); }
nav a { color: #ccc; text-decoration: none; margin-left: 28px; font-size: .9rem; transition: color .2s; }
nav a:hover { color: var(--white); }
.btn-demo-nav {
    background: var(--brand); color: var(--white); padding: 8px 20px;
    border-radius: 6px; font-weight: 600; font-size: .85rem;
    text-decoration: none; margin-left: 24px; transition: background .2s;
}
.btn-demo-nav:hover { background: var(--brand-dk); }

/* ── HERO ── */
.hero {
    position: relative; overflow: hidden;
    background: linear-gradient(135deg, var(--dark) 0%, #16213e 60%, #0f3460 100%);
    min-height: 88vh;
    display: flex; align-items: center;
}
.hero-bg {
    position: absolute; inset: 0;
    background-image: url('https://listaqr.com.ar/wp-content/uploads/2020/05/ron-whitaker-mVuKCYMGZBM-unsplash.jpg');
    background-size: cover; background-position: center;
    opacity: .18;
}
.hero-inner {
    position: relative; z-index: 2;
    max-width: 1200px; margin: 0 auto; padding: 80px 5%;
    display: flex; align-items: center; gap: 60px;
}
.hero-text { flex: 1; }
.hero-text h1 {
    font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 800;
    color: var(--white); line-height: 1.15; margin-bottom: 20px;
}
.hero-text h1 em { color: var(--brand); font-style: normal; }
.hero-text p { color: #b0b8d0; font-size: 1.1rem; line-height: 1.7; margin-bottom: 36px; max-width: 500px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
    background: var(--brand); color: var(--white);
    padding: 14px 32px; border-radius: 8px; font-weight: 700; font-size: 1rem;
    text-decoration: none; transition: background .2s, transform .15s;
}
.btn-primary:hover { background: var(--brand-dk); transform: translateY(-2px); }
.btn-secondary {
    background: transparent; color: var(--white);
    border: 2px solid rgba(255,255,255,.4);
    padding: 14px 32px; border-radius: 8px; font-weight: 600; font-size: 1rem;
    text-decoration: none; transition: border-color .2s, background .2s;
}
.btn-secondary:hover { border-color: var(--white); background: rgba(255,255,255,.07); }
.hero-img { flex: 0 0 auto; }
.hero-img img { max-width: min(380px, 42vw); border-radius: 16px; filter: drop-shadow(0 20px 40px rgba(0,0,0,.5)); }

/* ── SECTIONS SHARED ── */
section { padding: 96px 5%; }
.container { max-width: 1160px; margin: 0 auto; }
.section-tag { font-size: .75rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--brand); margin-bottom: 12px; }
.section-title { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; color: var(--dark); margin-bottom: 16px; line-height: 1.2; }
.section-lead { font-size: 1.05rem; color: var(--muted); line-height: 1.7; max-width: 620px; }

/* ── BENEFITS INTRO ── */
#beneficios { background: var(--light-bg); }
.benefits-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 28px; margin-top: 56px;
}
.benefit-card {
    background: var(--white); border-radius: var(--radius);
    padding: 32px 28px; box-shadow: var(--shadow);
    transition: transform .2s;
}
.benefit-card:hover { transform: translateY(-4px); }
.benefit-icon { font-size: 2rem; margin-bottom: 14px; }
.benefit-card h3 { font-size: 1rem; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.benefit-card p  { font-size: .9rem; color: var(--muted); line-height: 1.65; }

/* ── DETAIL BENEFITS ── */
#ventajas { background: var(--white); }
.ventajas-intro { margin-bottom: 20px; }
.ventajas-desc { color: var(--muted); font-size: 1rem; line-height: 1.7; max-width: 700px; margin-bottom: 56px; }
.ventajas-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}
.ventaja-item { display: flex; gap: 20px; align-items: flex-start; }
.ventaja-num {
    flex-shrink: 0; width: 48px; height: 48px;
    background: var(--brand); color: var(--white);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; font-weight: 800;
}
.ventaja-item h4 { font-size: 1rem; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.ventaja-item p  { font-size: .9rem; color: var(--muted); line-height: 1.65; }

/* ── PLANES ── */
#planes { background: var(--dark); }
#planes .section-title { color: var(--white); }
#planes .section-tag   { color: #ff7675; }
#planes .section-lead  { color: #9098b8; }
.planes-grid {
    display: flex; gap: 32px; margin-top: 56px;
    justify-content: center; flex-wrap: wrap;
}
.plan-card {
    background: var(--mid); border-radius: var(--radius);
    padding: 44px 36px; width: 340px; max-width: 100%;
    border: 2px solid transparent; transition: border-color .2s, transform .2s;
    position: relative;
}
.plan-card:hover { border-color: var(--brand); transform: translateY(-4px); }
.plan-card.featured {
    background: linear-gradient(160deg, #2a0a3a 0%, #3a0a24 100%);
    border-color: var(--brand);
}
.plan-badge {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: var(--brand); color: var(--white);
    font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
    padding: 4px 16px; border-radius: 20px;
}
.plan-name { font-size: 1.1rem; font-weight: 700; color: #ccc; margin-bottom: 8px; }
.plan-price { margin-bottom: 28px; }
.plan-currency { font-size: 1.2rem; font-weight: 700; color: var(--white); vertical-align: top; line-height: 2.4; }
.plan-amount { font-size: 3.6rem; font-weight: 800; color: var(--white); line-height: 1; }
.plan-period { font-size: .85rem; color: #9098b8; }
.plan-features { list-style: none; margin-bottom: 36px; }
.plan-features li {
    font-size: .9rem; color: #b0b8d0; padding: 9px 0;
    border-bottom: 1px solid rgba(255,255,255,.06);
    display: flex; gap: 10px; align-items: flex-start;
}
.plan-features li::before { content: "✓"; color: var(--brand); font-weight: 700; flex-shrink: 0; }
.plan-features li small { font-size: .78rem; color: #9098b8; display: block; margin-top: 3px; }
.btn-plan {
    display: block; text-align: center;
    background: var(--brand); color: var(--white);
    padding: 14px; border-radius: 8px; font-weight: 700; font-size: 1rem;
    text-decoration: none; transition: background .2s;
}
.btn-plan:hover { background: var(--brand-dk); }

/* ── CONTACTO ── */
#contacto { background: var(--light-bg); }
.contacto-inner {
    display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start;
}
.contacto-text .section-title { margin-bottom: 18px; }
.contacto-text p { color: var(--muted); line-height: 1.75; }
form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { font-size: .82rem; font-weight: 600; color: var(--text); margin-bottom: 4px; display: block; }
input, textarea {
    width: 100%; padding: 12px 14px;
    border: 1.5px solid var(--border); border-radius: 8px;
    font-size: .95rem; font-family: inherit; color: var(--text);
    background: var(--white); transition: border-color .2s;
    outline: none;
}
input:focus, textarea:focus { border-color: var(--brand); }
textarea { resize: vertical; min-height: 110px; }
.btn-submit {
    background: var(--brand); color: var(--white);
    border: none; padding: 14px; border-radius: 8px;
    font-weight: 700; font-size: 1rem; cursor: pointer;
    transition: background .2s; font-family: inherit;
}
.btn-submit:hover { background: var(--brand-dk); }
.form-note { font-size: .8rem; color: var(--muted); }
.form-success {
    display: none; background: #e8f8f0; border: 1.5px solid #2ecc71;
    color: #1a7a4a; padding: 16px; border-radius: 8px; font-weight: 600; text-align: center;
}

/* ── FOOTER ── */
footer {
    background: var(--dark); color: #9098b8;
    text-align: center; padding: 28px 5%;
    font-size: .85rem;
}
footer a { color: var(--brand); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    .hero-inner  { flex-direction: column; text-align: center; }
    .hero-img img { max-width: 280px; }
    .hero-btns   { justify-content: center; }
    .contacto-inner { grid-template-columns: 1fr; gap: 40px; }
    .form-row { grid-template-columns: 1fr; }
    nav { display: none; }
}