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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        /* Carrusel de fondo */
        .background-slider {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -2;
        }

        .slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0;
            transition: opacity 1.5s ease-in-out;
        }

        .slide.active {
            opacity: 1;
        }

        /* Overlay oscuro para legibilidad */
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
        }

        /* Indicadores del carrusel */
        .slider-indicators {
            position: fixed;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
            z-index: 1;
        }

        .indicator {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .indicator.active {
            background: white;
            width: 30px;
            border-radius: 6px;
        }

        .indicator:hover {
            background: rgba(255, 255, 255, 0.8);
        }

        /* Contenedor del login */
        .login-container {
            background: rgba(255, 255, 255, 0.95);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            width: 100%;
            max-width: 450px;
            backdrop-filter: blur(10px);
            animation: slideUp 0.6s ease-out;
        }

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

        .logo {
            text-align: center;
            margin-bottom: 30px;
        }

        .logo-icon {
            font-size: 60px;
            color: #667eea;
            margin-bottom: 15px;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }

        .logo h1 {
            font-size: 28px;
            color: #2c3e50;
            margin-bottom: 5px;
        }

        .logo p {
            color: #7f8c8d;
            font-size: 14px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #2c3e50;
            font-weight: 500;
        }

        .input-wrapper {
            position: relative;
        }

        .input-icon {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #7f8c8d;
        }

        .form-group input {
            width: 100%;
            padding: 12px 15px 12px 45px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 14px;
            transition: all 0.3s;
        }

        .form-group input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .toggle-password {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #7f8c8d;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .toggle-password:hover {
            color: #667eea;
            transform: translateY(-50%) scale(1.1);
        }

        .login-btn {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 10px;
        }

        .login-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
        }

        .login-btn:active {
            transform: translateY(0);
        }

        .alerta {
            padding: 12px;
            border-radius: 8px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            animation: slideDown 0.3s ease-out;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .alerta-error {
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .alerta-warning {
            background: #fff3cd;
            color: #856404;
            border: 1px solid #ffeaa7;
        }

        .info-box {
            margin-top: 20px;
            padding: 15px;
            background: #e8f4f8;
            border-radius: 8px;
            font-size: 13px;
            border-left: 4px solid #667eea;
        }

        .info-box strong {
            color: #667eea;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .login-container {
                margin: 20px;
                padding: 30px 20px;
            }

            .slider-indicators {
                bottom: 20px;
            }
        }