/* =========================================
   RESET Y VARIABLES GLOBALES
   ========================================= */
* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
    outline: none; 
}

:root {
    --sidebar-width: 80px;
    --container-padding: 20px;
    --transition-speed: 0.3s;
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    min-height: 100vh;
    font-size: 14px;
    overflow-x: hidden;
    background-color: #0f172a;
    color: #f8fafc;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    z-index: -1;
    pointer-events: none;
}

.hidden { 
    display: none !important; 
}

/* =========================================
   UTILIDADES
   ========================================= */
.container { 
    max-width: 1100px; 
    margin: 100px auto 40px auto; 
    padding: 0 var(--container-padding);
}

.card {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 25px;
    margin-bottom: 20px;
}

.badge {
    background: #22d3ee;
    color: black;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: bold;
    font-size: 0.75rem;
}