:root {
        --primary-color: #667eea;
        --secondary-color: #764ba2;
        --accent-color: #4068a8;
        --text-color: #ffffff;
        --input-bg: rgba(255, 255, 255, 0.9);
        --input-text: #333333;
        --shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        --transition: all 0.3s ease;
    }

    body {
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }

    .login-container {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        min-height: 85vh;
        padding: 20px;
    }

    .login-card {
        background-color: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 16px;
        box-shadow: var(--shadow);
        width: 100%;
        max-width: 420px;
        padding: 40px 30px;
        color: var(--text-color);
        border: 1px solid rgba(255, 255, 255, 0.2);
        transition: var(--transition);
    }

    .login-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    }

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

    .login-title {
        font-size: 28px;
        font-weight: 600;
        margin-bottom: 10px;
        color: var(--text-color);
    }

    .login-subtitle {
        font-size: 16px;
        opacity: 0.8;
    }

    .form-group {
        margin-bottom: 25px;
        position: relative;
    }

    .form-label {
        display: block;
        margin-bottom: 8px;
        font-weight: 500;
        font-size: 14px;
        color: var(--text-color);
        letter-spacing: 0.5px;
    }

    .form-control {
        width: 100%;
        padding: 14px 15px 14px 45px;
        border: none;
        border-radius: 8px;
        background-color: var(--input-bg);
        color: var(--input-text);
        font-size: 16px;
        transition: var(--transition);
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    }

    .form-control:focus {
        outline: none;
        box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
    }

    .input-icon {
        position: absolute;
        left: 15px;
        top: 40px;
        color: var(--primary-color);
        opacity: 0.7;
    }

    .btn-login {
        width: 100%;
        padding: 15px;
        border: none;
        border-radius: 8px;
        background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
        color: white;
        font-size: 16px;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
        letter-spacing: 0.5px;
        margin-top: 10px;
    }

    .btn-login:hover {
        background: linear-gradient(to right, var(--secondary-color), var(--accent-color));
        transform: translateY(-2px);
        box-shadow: 0 6px 15px rgba(0, 0, 0, 0.25);
    }

    .btn-login:active {
        transform: translateY(1px);
    }

    .forgot-password {
        text-align: center;
        margin-top: 20px;
    }

    .forgot-password a {
        color: var(--text-color);
        text-decoration: none;
        font-size: 14px;
        opacity: 0.8;
        transition: var(--transition);
    }

    .forgot-password a:hover {
        opacity: 1;
        text-decoration: underline;
    }

    .footer {
        text-align: center;
        padding: 20px;
        color: var(--text-color);
        opacity: 0.7;
        font-size: 14px;
        margin-top: auto;
    }

    /* Toast styling */
    .toast {
        background-color: white;
        border-radius: 8px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }

    .toast-header {
        border-bottom: 1px solid #eee;
        padding: 12px 15px;
    }

    .toast-header img {
        max-height: 30px;
    }

    .btn-close {
        background: transparent;
        border: none;
        font-size: 20px;
        cursor: pointer;
        opacity: 0.5;
        transition: var(--transition);
    }

    .btn-close:hover {
        opacity: 1;
    }

    /* Animaciones */
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .login-card {
        animation: fadeIn 0.6s ease-out forwards;
    }

    /* Responsive */
    @media (max-width: 576px) {
        .login-card {
            padding: 30px 20px;
        }

        .login-title {
            font-size: 24px;
        }

        .form-control {
            padding: 12px 15px 12px 40px;
        }
    }