/* ============================================
   SHARED.CSS — Systelcom
   Estilos comunes a todas las páginas.
   Cargar ANTES del CSS específico de cada página.
   © 2026 Systelcom. Todos los derechos reservados.
   ============================================ */

/* ── Variables globales de marca ── */
:root {
    --brand-green: #5cb85c;
    --brand-blue:  #1e40af;
    --brand-green-dark: #449d44;
    --white: #ffffff;
    --bg-light: #f8fafc;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --radius-pill: 50px;
    --radius-card: 20px;
    --transition: 0.3s ease;
}

/* ── Reset base ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ── Tipografía base (Poppins para páginas internas) ── */
body {
    font-family: 'Poppins', sans-serif;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ── Contenedor centrado ── */
.container {
    margin: 0 auto;
    padding: 40px 20px;
}

/* ── Header de página interna ── */
header {
    text-align: center;
    margin-bottom: 50px;
}

/* ── Logo ── */
.logo-placeholder {
    max-width: 200px;
    margin-bottom: 20px;
}

/* ── Botón volver — base compartida ── */
.btn-back {
    display: inline-block;
    text-decoration: none;
    padding: 10px 25px;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 30px;
    transition: var(--transition);
    border: 1px solid rgba(169, 169, 197, 0.2);
    background: var(--brand-blue);
    color: var(--white);
}

.btn-back:hover {
    background: var(--brand-green);
    transform: scale(1.04);
    box-shadow: 0 0 18px rgba(92, 184, 92, 0.35);
}

/* ── Fondo con resplandor radial ── */
.background-glow {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(circle at 10% 20%, rgba(92, 184, 92, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(30, 64, 175, 0.10) 0%, transparent 40%);
}

/* ── h1 span acento de marca ── */
h1 span { color: var(--brand-green); }

/* ── Animaciones de entrada reutilizables ── */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* ── Utilidad hover lift ── */
.hover-lift:hover {
    transform: translateY(-3px);
    transition: all 0.2s ease;
}