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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-box {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    animation: slideUp 0.5s ease-out;
    border: 1px solid #e0e0e0;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px rgba(44, 62, 80, 0.2);
}

    .icon-wrapper svg {
        width: 40px;
        height: 40px;
        color: white;
    }

.login-header h1 {
    font-size: 28px;
    color: #2c3e50;
    margin-bottom: 8px;
    font-weight: 600;
}

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

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

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

    .form-group label {
        display: block;
        margin-bottom: 8px;
        color: #2c3e50;
        font-weight: 500;
        font-size: 14px;
    }

    .form-group input {
        width: 100%;
        padding: 12px 16px;
        border: 2px solid #e0e0e0;
        border-radius: 10px;
        font-size: 15px;
        transition: all 0.3s ease;
        background: #f8f9fa;
        color: #2c3e50;
    }

        .form-group input::placeholder {
            color: #95a5a6;
        }

        .form-group input:focus {
            outline: none;
            border-color: #2c3e50;
            background: white;
            box-shadow: 0 0 0 3px rgba(44, 62, 80, 0.1);
        }

.error-message {
    background: #fee;
    border: 1px solid #fcc;
    color: #c33;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

    .btn-login:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 25px rgba(44, 62, 80, 0.3);
        background: linear-gradient(135deg, #34495e 0%, #2c3e50 100%);
    }

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

    .btn-login:disabled {
        opacity: 0.7;
        cursor: not-allowed;
    }

.btn-loader {
    display: inline-block;
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.login-footer {
    text-align: center;
    color: #95a5a6;
    font-size: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #ecf0f1;
}

/* Responsivo */
@media (max-width: 480px) {
    .login-box {
        padding: 30px 20px;
    }

    .login-header h1 {
        font-size: 24px;
    }
}