/* ==========================================================================
   DAIversa – página oficial
   TOKENS DE DISEÑO: paleta burdeos provisional. Al definir la identidad
   visual basta con cambiar --accent / --accent-2 y la tipografía.
   ========================================================================== */
:root {
    --bg: #ffffff;
    --bg-soft: #faf7f6;
    --bg-strong: #2a0d17;
    --surface: #ffffff;
    --border: #ebe3e1;
    --text: #1f1416;
    --text-muted: #574a4d;
    --text-subtle: #7a6c6f;
    --text-on-strong: #f3e6ea;
    --text-on-strong-muted: #dcc6cd;
    --accent: #7b1e3a;
    --accent-hover: #5e1630;
    --accent-soft: rgba(123, 30, 58, 0.08);
    --accent-2: #c08a3e;
    --on-accent: #ffffff;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 2px rgba(42, 13, 23, 0.04), 0 8px 24px rgba(42, 13, 23, 0.06);
    --max: 1180px;
    --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #140d0f;
        --bg-soft: #1c1316;
        --bg-strong: #3a1020;
        --surface: #1c1316;
        --border: #33242a;
        --text: #f6eff1;
        --text-muted: #d8cbcf;
        --text-subtle: #a8979c;
        --accent: #e38aa5;
        --accent-hover: #efaec1;
        --accent-soft: rgba(227, 138, 165, 0.12);
        --accent-2: #e0b36a;
        --on-accent: #2a0d17;
        --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
    }
}

/* ==========================================================================
   BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

section { padding: 96px 0; }
section.alt { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 16px; }
.section-head p { color: var(--text-muted); font-size: 18px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 16px;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.btn-ghost { border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.noscript { padding: 24px; text-align: center; }

/* ==========================================================================
   CABECERA
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 19px; }
.brand:hover { color: var(--text); }
.brand-mark {
    width: 32px; height: 32px;
    border-radius: 8px;
    background: var(--accent);
    color: var(--on-accent);
    display: grid; place-items: center;
    font-size: 17px; font-weight: 800;
}
.brand small { font-weight: 500; color: var(--text-subtle); }

.nav-links { display: flex; align-items: center; gap: 24px; list-style: none; }
.nav-links a { color: var(--text-muted); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--text); }
.nav-links .btn { padding: 10px 18px; font-size: 15px; color: var(--on-accent); }

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    width: 42px; height: 42px;
    color: var(--text);
    font-size: 18px;
    cursor: pointer;
}

/* ==========================================================================
   INICIO
   ========================================================================== */
.hero { padding: 120px 0 104px; position: relative; overflow: hidden; }
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 85% 10%, var(--accent-soft) 0%, transparent 45%),
        radial-gradient(circle at 10% 90%, color-mix(in srgb, var(--accent-2) 8%, transparent) 0%, transparent 40%);
    pointer-events: none;
}
.hero .container { position: relative; }
.hero h1 { font-size: clamp(38px, 6vw, 64px); max-width: 920px; margin-bottom: 24px; letter-spacing: -0.035em; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-lead { font-size: clamp(18px, 2.2vw, 21px); color: var(--text-muted); max-width: 700px; margin-bottom: 40px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 32px;
    list-style: none;
    margin-top: 72px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
    max-width: 900px;
}
.hero-points li { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 16px; }
.hero-points i { color: var(--accent-2); }

/* ==========================================================================
   COMPONENTES
   ========================================================================== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: center; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 16px; }

.icon {
    width: 48px; height: 48px;
    border-radius: 10px;
    background: var(--accent-soft);
    color: var(--accent);
    display: grid; place-items: center;
    font-size: 20px;
    margin-bottom: 20px;
}

.feature-list { list-style: none; display: grid; gap: 28px; }
.feature-list li { display: grid; grid-template-columns: 48px 1fr; gap: 18px; align-items: start; }
.feature-list .icon { margin-bottom: 0; }
.feature-list h3 { font-size: 18px; margin-bottom: 4px; }
.feature-list p { color: var(--text-muted); font-size: 16px; }

.ticks { list-style: none; display: grid; gap: 10px; }
.ticks li { display: flex; gap: 12px; align-items: baseline; font-size: 15px; }
.ticks li i { color: var(--accent-2); font-size: 13px; }

.highlight {
    background: var(--bg-strong);
    color: var(--text-on-strong);
    border-radius: var(--radius);
    padding: 40px;
}
.highlight h3 { color: #fff; font-size: 24px; margin-bottom: 12px; }
.highlight p { color: var(--text-on-strong-muted); }
.highlight strong { color: #fff; }
.highlight .ticks { margin-top: 24px; }
.highlight .ticks li { color: var(--text-on-strong); font-size: 16px; }

/* Servicios */
.service-card { position: relative; display: flex; flex-direction: column; }
.service-card .num {
    position: absolute;
    top: 28px; right: 32px;
    font-size: 14px; font-weight: 700;
    color: var(--text-subtle);
}
.service-card .for { color: var(--text-muted); margin-bottom: 20px; }
.service-card .ticks { margin-bottom: 28px; }
.service-card .more { margin-top: auto; font-weight: 600; font-size: 15px; display: inline-flex; align-items: center; gap: 8px; }

/* Proceso */
.steps { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-bottom: 72px; counter-reset: paso; }
.steps li { counter-increment: paso; border-top: 3px solid var(--accent); padding-top: 20px; }
.steps li::before {
    content: counter(paso, decimal-leading-zero);
    display: block;
    font-size: 14px; font-weight: 700;
    color: var(--accent);
    margin-bottom: 8px;
}
.steps h3 { font-size: 18px; margin-bottom: 6px; }
.steps p { color: var(--text-muted); font-size: 15px; }

.subhead { font-size: 22px; margin-bottom: 24px; }
.commitments { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px 32px; }
.commitment { display: grid; grid-template-columns: 24px 1fr; gap: 14px; }
.commitment i { color: var(--accent); font-size: 18px; margin-top: 3px; }
.commitment h4 { font-size: 16px; margin-bottom: 2px; }
.commitment p { color: var(--text-muted); font-size: 15px; }

/* Tecnologías */
.tech-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 20px; }
.tech-group {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
}
.tech-group.is-ia { border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); background: linear-gradient(180deg, var(--accent-soft), var(--surface) 70%); }
.tech-group h3 { display: flex; align-items: center; gap: 8px; font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-subtle); margin-bottom: 14px; }
.tech-group.is-ia h3 { color: var(--accent); }
.badge-ia { font-size: 10px; letter-spacing: 0.06em; padding: 2px 6px; border-radius: 4px; background: var(--accent); color: var(--on-accent); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
    font-size: 14px;
    font-weight: 500;
    padding: 5px 11px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
}

/* Casos */
.case { display: flex; flex-direction: column; gap: 10px; }
.case .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 6px; }
.tag {
    font-size: 11px; font-weight: 700;
    letter-spacing: 0.06em; text-transform: uppercase;
    padding: 4px 8px; border-radius: 4px;
    background: var(--accent-soft); color: var(--accent);
}
.tag.dark { background: var(--bg-strong); color: #fff; }
.case h3 { font-size: 18px; margin-bottom: 0; }
.case p { font-size: 15px; }
.case .stack { font-size: 13px; color: var(--text-subtle); }
.case .demo-link {
    margin-top: auto;
    padding-top: 12px;
    font-size: 14px; font-weight: 600;
    display: inline-flex; align-items: center; gap: 8px;
}

/* Contacto */
.cta {
    background: var(--bg-strong);
    border-radius: 20px;
    padding: 72px 56px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(227, 138, 165, 0.22) 0%, transparent 60%);
    pointer-events: none;
}
.cta > * { position: relative; }
.cta .eyebrow { color: #f0b9c9; }
.cta h2 { color: #fff; font-size: clamp(28px, 4vw, 40px); margin-bottom: 16px; }
.cta p { color: var(--text-on-strong-muted); max-width: 560px; margin: 0 auto 32px; font-size: 18px; }
.cta .btn-primary { background: #fff; color: #2a0d17; }
.cta .btn-primary:hover { background: #f3e6ea; color: #2a0d17; }

/* Pie */
.site-footer { border-top: 1px solid var(--border); padding: 40px 0; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.site-footer p, .site-footer a { color: var(--text-subtle); font-size: 14px; }
.site-footer a:hover { color: var(--text); }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; list-style: none; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .tech-groups { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
    .commitments { grid-template-columns: repeat(2, 1fr); }
    .split { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 960px) {
    .nav-toggle { display: inline-grid; place-items: center; }
    .nav-links {
        display: none;
        position: absolute;
        top: 68px; left: 0; right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 8px 16px 20px;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
    }
    .nav-links.open { display: flex; }
    .nav-links li a { display: block; padding: 12px 8px; }
    .nav-links .btn { justify-content: center; margin-top: 8px; }
}

@media (max-width: 640px) {
    body { font-size: 16px; }
    .container { padding: 0 16px; }
    section { padding: 64px 0; }
    .hero { padding: 72px 0 64px; }
    .hero-points { flex-direction: column; margin-top: 48px; }
    .grid-3, .commitments, .tech-groups { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr; }
    .card, .highlight { padding: 24px; }
    .cta { padding: 48px 24px; }
    .brand { font-size: 17px; white-space: nowrap; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}