body {
            background-color: #000080;
            color: #F3F2F8;
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            min-height: 100vh;
            margin: 0;
            display: flex;
            flex-direction: column;
        }
        .navbar {
            background-color: rgba(0, 0, 50, 0.95) !important;
            border-bottom: 1px solid rgba(253, 93, 57, 0.3);
        }
        .navbar-brand {
            color: #F3F2F8 !important;
            font-weight: 700;
            transition: color 0.3s, text-shadow 0.3s, transform 0.3s;
        }
        .navbar-brand:hover {
            color: #FD5D39 !important;
            text-shadow: 0 0 8px rgba(253, 93, 57, 0.7);
            transform: scale(1.01);
        }
        .logout-btn {
            border: 1px solid #FD5D39;
            color: #FD5D39;
            background: transparent;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .logout-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            transition: left 0.6s ease;
        }
        .logout-btn:hover {
            background: #FD5D39;
            color: #fff;
            border-color: #FD5D39;
        }
        .logout-btn:hover::before {
            left: 100%;
        }
        .flash-container {
            margin-top: 20px;
        }
        .alert {
            border-radius: 12px;
            border: 1px solid rgba(255,255,255,0.1);
            animation: slideIn 0.4s ease;
        }
        @keyframes slideIn {
            0% { opacity: 0; transform: translateY(-10px); }
            100% { opacity: 1; transform: translateY(0); }
        }
        .app-footer {
            margin-top: auto;
            background-color: rgba(0, 0, 30, 0.85);
            backdrop-filter: blur(10px);
            border-top: 1px solid rgba(253, 93, 57, 0.3);
            color: rgba(243,242,248,0.7);
            text-align: center;
            padding: 15px 20px;
            font-size: 0.9rem;
        }
        .app-footer span {
            color: #FD5D39;
            font-weight: 600;
        }
          /* Selectores de fecha en naranja */
        input[type="date"],
        input[type="datetime-local"] {
        color-scheme: dark;
        }
        input[type="date"]::-webkit-calendar-picker-indicator,
        input[type="datetime-local"]::-webkit-calendar-picker-indicator {
        filter: invert(50%) sepia(100%) saturate(2000%) hue-rotate(340deg);
        }