/* ============================================================
   main.css — Estilos de la página pública
   ============================================================ */

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

:root {
    --primary:     #1a56db;
    --primary-dk:  #1e429f;
    --primary-lt:  #e8effd;
    --accent:      #0ea5e9;
    --success:     #059669;
    --warning:     #d97706;
    --danger:      #dc2626;
    --gray-50:     #f9fafb;
    --gray-100:    #f3f4f6;
    --gray-200:    #e5e7eb;
    --gray-400:    #9ca3af;
    --gray-600:    #4b5563;
    --gray-800:    #1f2937;
    --white:       #ffffff;
    --font:        'Segoe UI', system-ui, -apple-system, sans-serif;
    --radius:      0.5rem;
    --shadow:      0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
    --shadow-lg:   0 10px 25px rgba(0,0,0,0.15);
}

body {
    font-family: var(--font);
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
}

/* ---- Hero ---- */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dk) 100%);
    color: var(--white);
    padding: 5rem 2rem;
    text-align: center;
}

.hero h1 { font-size: 2.5rem; font-weight: 700; margin-bottom: 1rem; }
.hero p  { font-size: 1.2rem; opacity: 0.9; max-width: 600px; margin: 0 auto 2rem; }

.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-white  { background: var(--white); color: var(--primary); }
.btn-white:hover { background: var(--gray-100); }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.5); }
.btn-outline:hover { background: rgba(255,255,255,0.1); }

/* ---- Features ---- */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    text-align: center;
}

.feature-card .icon {
    width: 56px; height: 56px;
    background: var(--primary-lt);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.25rem;
    color: var(--primary);
}

.feature-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
.feature-card p  { color: var(--gray-600); font-size: 0.95rem; }

/* ---- Footer ---- */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--gray-400);
    font-size: 0.875rem;
    border-top: 1px solid var(--gray-200);
}