:root {
    --bg: #0b1220;
    --surface: #0d1630;
    --card: #101a30;
    --text: #e8edf7;
    --muted: #a9b6d6;
    --brand: #66e0d8;
    --brand-2: #6ea8ff;
    --accent: #f7b267;
    --line: rgba(255, 255, 255, .10);
    --radius: 18px;
    --shadow: 0 18px 40px rgba(0, 0, 0, .35);
    --container-sm: 640px;
    --container-md: 840px;
    --container-lg: 1200px;
    --container-xl: 1320px;
}

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

html,
body {
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    font-family: Inter, system-ui, Segoe UI, Roboto, Arial, sans-serif;
    background: radial-gradient(1100px 700px at 90% -10%, rgba(110, 168, 255, .25), transparent 55%), radial-gradient(900px 600px at -10% 10%, rgba(102, 224, 216, .18), transparent 55%), var(--bg);
    color: var(--text);
    line-height: 1.6
}

a {
    color: inherit;
    text-decoration: none;
    transition: .2s
}

:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
    border-radius: 10px
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    z-index: 60;
    backdrop-filter: saturate(140%) blur(10px);
    background: linear-gradient(180deg, rgba(16, 26, 48, .9), rgba(16, 26, 48, .55));
    border-bottom: 1px solid var(--line);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .3)
}

.nav {
    width: min(92vw, var(--container-lg));
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px
}

.logo {
    display: flex;
    align-items: center;
    gap: .6rem;
    font-weight: 800;
    letter-spacing: .4px
}

.logo-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    box-shadow: 0 0 16px rgba(110, 168, 255, .8)
}

/* Nav */
.menu-btn {
    display: none;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
    border-radius: 12px;
    padding: .5rem .7rem
}

.menu-btn svg {
    display: block
}

nav ul {
    list-style: none;
    display: flex;
    gap: .8rem 1rem;
    flex-wrap: wrap;
    align-items: center;
    margin: 0;
    padding: 0
}

nav a {
    padding: .55rem .85rem;
    border-radius: 12px;
    color: var(--muted)
}

nav a.active,
nav a:hover {
    background: rgba(255, 255, 255, .08);
    color: var(--text)
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .8rem 1.1rem;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: linear-gradient(135deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .03));
    color: var(--text);
    box-shadow: var(--shadow);
    font-weight: 600
}

.btn:hover {
    transform: translateY(-2px)
}

.btn.primary {
    border-color: transparent;
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: #0b1220
}

.chip {
    display: inline-flex;
    gap: .45rem;
    align-items: center;
    padding: .35rem .6rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--muted);
    font-size: .9rem
}

/* Sections */
section {
    scroll-margin-top: 98px;
    padding: 120px 0 84px
}

#inicio {
    padding-top: 100px
}

.inner {
    width: min(92vw, var(--container-lg));
    margin: 0 auto
}

.alt {
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, .02))
}

h1 {
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    line-height: 1.15;
    margin: .6rem 0 1rem;
    background: linear-gradient(90deg, var(--brand), var(--brand-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent
}

h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin: 0 0 .6rem;
    color: var(--brand)
}

p.section-lead {
    color: var(--muted);
    max-width: 62ch
}

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    gap: 1.75rem;
    align-items: start
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    margin-top: 1rem
}

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow);
    transition: transform .2s ease, box-shadow .2s ease
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(102, 224, 216, .20)
}

.feature {
    display: flex;
    gap: .7rem;
    align-items: flex-start
}

.feature svg {
    min-width: 22px
}

/* Pricing */
.pricing {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.1rem
}

.plan {
    background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.2rem
}

.plan.popular {
    outline: 2px solid var(--brand)
}

/* Form */
input,
textarea {
    width: 100%;
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, .18);
    background: #0b1324;
    color: var(--text)
}

input::placeholder,
textarea::placeholder {
    color: #94a3c4
}

input:focus,
textarea:focus {
    border-color: var(--brand);
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 224, 216, .15)
}

/* Reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(10px)
}

.reveal.in {
    opacity: 1;
    transform: none;
    transition: opacity .45s ease, transform .45s ease
}

/* Footer */
footer {
    padding: 44px 0;
    color: var(--muted);
    border-top: 1px solid var(--line)
}

/* Responsive */
@media (max-width:980px) {
    .grid-2 {
        grid-template-columns: 1fr
    }

    #inicio {
        padding-top: 85px
    }
}

/* SOLO en pantallas pequeñas y SOLO cuando aparece el sidebar */
@media (max-width:768px) {
    .btn.primary {
        padding: .45rem .75rem;
        /* más compacto */
        font-size: .85rem;
        /* texto más pequeño */
    }


    .menu-btn {
        display: block
    }

    /* Separación sutil de los 3 elementos del header cuando el sidebar está abierto */
    body.menu-open .nav {
        row-gap: .5rem
    }

    body.menu-open .nav>.logo {
        margin-bottom: .25rem
    }

    body.menu-open .nav>#menuBtn {
        margin-bottom: .25rem
    }

    body.menu-open .nav>.btn.primary {
        margin-top: .25rem
    }

    /* Sidebar abierto: separa elementos del listado */
    nav {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(16, 26, 48, .96);
        border-bottom: 1px solid var(--line);
        display: none
    }

    nav.open {
        display: block
    }

    nav.open ul {
        flex-direction: column;
        padding: .6rem
    }

    nav.open ul li+li {
        margin-top: .35rem
    }

    nav.open a {
        display: block;
        padding: .55rem .9rem
    }

}