/* ============================================
   EFECTO DE NIEVE NAVIDEÑO
   ============================================ */

/* Contenedor de copos de nieve */
.snowflakes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    overflow: hidden;
}

/* Copo de nieve individual */
.snowflake {
    position: absolute;
    top: -10px;
    color: #fff;
    font-size: 1em;
    font-family: Arial, sans-serif;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.8);
    animation: fall linear infinite;
    opacity: 0.8;
}

/* Animación de caída */
@keyframes fall {
    0% {
        top: -10%;
        opacity: 0.8;
    }
    100% {
        top: 100%;
        opacity: 0.3;
    }
}

/* Variaciones de copos de nieve */
.snowflake:nth-child(1) { left: 2%; animation-duration: 10s; animation-delay: 0s; font-size: 0.8em; }
.snowflake:nth-child(2) { left: 8%; animation-duration: 12s; animation-delay: 1s; font-size: 1.2em; }
.snowflake:nth-child(3) { left: 15%; animation-duration: 8s; animation-delay: 2s; font-size: 1em; }
.snowflake:nth-child(4) { left: 22%; animation-duration: 14s; animation-delay: 0.5s; font-size: 0.9em; }
.snowflake:nth-child(5) { left: 28%; animation-duration: 11s; animation-delay: 1.5s; font-size: 1.1em; }
.snowflake:nth-child(6) { left: 35%; animation-duration: 9s; animation-delay: 2.5s; font-size: 0.85em; }
.snowflake:nth-child(7) { left: 42%; animation-duration: 13s; animation-delay: 0.8s; font-size: 1.3em; }
.snowflake:nth-child(8) { left: 48%; animation-duration: 10s; animation-delay: 1.8s; font-size: 0.95em; }
.snowflake:nth-child(9) { left: 55%; animation-duration: 12s; animation-delay: 2.2s; font-size: 1.15em; }
.snowflake:nth-child(10) { left: 62%; animation-duration: 11s; animation-delay: 0.3s; font-size: 0.88em; }
.snowflake:nth-child(11) { left: 68%; animation-duration: 9s; animation-delay: 1.2s; font-size: 1.05em; }
.snowflake:nth-child(12) { left: 75%; animation-duration: 13s; animation-delay: 2.8s; font-size: 0.92em; }
.snowflake:nth-child(13) { left: 82%; animation-duration: 10s; animation-delay: 0.6s; font-size: 1.25em; }
.snowflake:nth-child(14) { left: 88%; animation-duration: 12s; animation-delay: 1.9s; font-size: 0.87em; }
.snowflake:nth-child(15) { left: 95%; animation-duration: 11s; animation-delay: 2.5s; font-size: 1.08em; }

/* Colores invernales para el tema */
:root {
    --winter-blue: #343344;
    --winter-light-blue: #E3F2FD;
    --winter-dark-blue: #343344;
    --snow-white: #FFFFFF;
    --ice-blue: #B3E5FC;
    --frost-gray: #ECEFF1;
}

/* Fondo invernal sutil */
body {
    background: linear-gradient(135deg, #E3F2FD 0%, #FFFFFF 50%, #E8EAF6 100%);
    background-attachment: fixed;
}

/* Navbar con tema invernal */
.navbar-dark.bg-primary {
    background: linear-gradient(135deg, var(--winter-blue) 0%, var(--winter-dark-blue) 100%) !important;
    box-shadow: 0 2px 10px rgba(74, 144, 226, 0.3);
}

/* Cards con efecto helado */
.card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(74, 144, 226, 0.2);
}

/* Botones con tema invernal */
.btn-primary {
    background: linear-gradient(135deg, var(--winter-blue) 0%, var(--winter-dark-blue) 100%);
    border: none;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--winter-dark-blue) 0%, var(--winter-blue) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

/* Footer con tema invernal */
footer {
    background: linear-gradient(135deg, var(--winter-dark-blue) 0%, #0D47A1 100%);
}